Update readme file

 * parse markdown lint
 * change file *.jpeg to *.jpg.
   jpeg is not supported in agl doc file.

Signed-off-by: Ronan Le Martret <ronan.lemartret@iot.bzh>

3 files changed, 37 insertions, 28 deletions

diff --git a/README.md b/README.md
index bfaa315..676407e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,4 @@
-xds-gdb: wrapper on gdb for XDS
-=================================
+# xds-gdb: wrapper on gdb for XDS
 
 `xds-gdb` is a wrapper on gdb debugger for X(cross) Development System.
 
@@ -7,50 +6,56 @@ This tool allows you to debug an application built with an xds-server without th
 need to install gdb or any cross tool.
 
 Two debugging models are supported:
-  1. XDS remote debugging requiring an XDS server and allowing cross debug your
+
+1. XDS remote debugging requiring an XDS server and allowing cross debug your
   application.
-  2. native debugging
+1. native debugging
 
  By default XDS remote debug is used and you need to define `XDS_NATIVE_GDB`
 variable to use native gdb debug mode instead.
 
 > **SEE ALSO**: [xds-server](https://github.com/iotbzh/xds-server), a web server
-used to remotely cross build applications.
-
+used to remotely cross build applications.  
 > **SEE ALSO**: [xds-exec](https://github.com/iotbzh/xds-exec),
 wrappers on `exec` command that allows to cross build your application through `xds-server`.
 
 ## Getting Started
 
 ## Installing xds-gdb
+
 Download latest `xds-gdb` release on [https://github.com/iotbzh/xds-gdb/releases](https://github.com/iotbzh/xds-gdb/releases).
 
 Extract the tarball anywhere you want, for example:
-```
+
+```bash
 mkdir -p ~/opt/bin
 unzip -j $DOWNLOAD_DIR/xds-gdb_linux-amd64-v1.0.0.zip xds-gdb/xds-gdb ~/opt/bin
 ```
 
 ## Configuration
- `xds-gdb` configuration is defined by variables (see listed below).
+
+ `xds-gdb` configuration is defined by variables (see listed below).  
  These variables may be set using :
-  - environment variables (inherited),
-  - or a config file set with `XDS_CONFIG` environment variable, for example:
+ 
+- environment variables (inherited),
+- or a config file set with `XDS_CONFIG` environment variable, for example:
   `XDS_CONFIG=/tmp/my_xds_gdb_config.env xds-gdb`
-  - or by setting variables within a gdb ini file (see details below),
-  - or a "user" config file located in following directory (first found is taken):
-     1. $(CURRENT_DIRECTORY)/.xds-gdb.env
-     2. $(CURRENT_DIRECTORY)/../xds-gdb.env
-     3. $(CURRENT_DIRECTORY)/target/xds-gdb.env
-     4. $(HOME)/.config/xds/xds-gdb.env
+- or by setting variables within a gdb ini file (see details below),
+- or a "user" config file located in following directory (first found is taken):
+  1. $(CURRENT_DIRECTORY)/.xds-gdb.env
+  1. $(CURRENT_DIRECTORY)/../xds-gdb.env
+  1. $(CURRENT_DIRECTORY)/target/xds-gdb.env
+  1. $(HOME)/.config/xds/xds-gdb.env
 
-### Configuration Variables:
+### Configuration Variables
 
  `XDS_CONFIG` :  
  Config file defining `XDS_xxx` configuration variables. Variables of this file
  will overwrite inherited environment variables. Variables definition may be 
- prefixed or not by "export" keyword. Here is an example of 
-```
+ prefixed or not by "export" keyword.  
+ Here is an example of 
+
+```bash
 cat $HOME/myProject/xds-gdb.env
 
 export XDS_SERVER_URL=http://xds-docker:8000
@@ -79,15 +84,15 @@ Cross Sdk ID to use to build project
 `XDS_SERVER_URL` :  *(mandatory with XDS server mode)*  
 Remote XDS server url
 
-
 ### Configuration variables set within gdb init command file
 
 Above `XDS_xxx` variables may also be defined within gdb init command file 
-(see --command or -x option of genuine Gdb).
+(see --command or -x option of genuine Gdb).  
 You must respect the following syntax: commented line including `:XDS-ENV:` tag
 
 Example of gdb init file where we define project and sdk ID:
-```
+
+```bash
      # :XDS-ENV: XDS_PROJECT_ID=IW7B4EE-DBY4Z74_myProject
      # :XDS-ENV: XDS_SDK_ID=poky-agl_aarch64_3.99.1+snapshot
 ```
@@ -99,10 +104,12 @@ Example of gdb init file where we define project and sdk ID:
 First the project you want to debug must be declared on an xds-server and this
 project may also has been built using this xds-server (see [xds-server](https://github.com/iotbzh/xds-server) for more details).
 
-So to debug it you need to know the xds-server url (eg. http://xds-docker:8000),
+So to debug it you need to know the xds-server url (eg. <http://xds-docker:8000>),
 you also need the project and sdk unique id. You can find these IDs in project 
 page of XDS dashboard or you can get them from command line using the `--list` 
-option. This option lists all existing projects ID:
+option.  
+This option lists all existing projects ID:
+
 ```bash
 XDS_SERVER_URL=http://xds-docker:8000 xds-gdb --list
 ```
@@ -150,7 +157,6 @@ is an AGL project based on app-templates that can be build and debug using XDS.
 
 To enable native debugging mode, you need to define `XDS_NATIVE_GDB` variable.
 
-
 ## Using xds-gdb within an IDE
 
 ### Netbeans
@@ -158,24 +164,27 @@ To enable native debugging mode, you need to define `XDS_NATIVE_GDB` variable.
 __Netbeans 8.x :__
 Open menu Tools -> Options  
 Then open C/C++ tab, in "Build Tools" sub-tab, click on "Add" button:
-![Add new tool panel](/docs/images/nb_newtool.jpeg)
+![Add new tool panel](/docs/images/nb_newtool.jpg)
 
 Then, you should set *Debugger Command* to point to xds-gdb
 
-![Add new tool panel](/docs/images/nb_xds_options.jpeg)
+![Add new tool panel](/docs/images/nb_xds_options.jpg)
 
 ### Others IDE
-*Coming soon...*
 
+*Coming soon...*
 
 ## How to build xds-gdb from scratch
 
 ### Prerequisites
+
  You must install and setup [Go](https://golang.org/doc/install) version 1.7 or
  higher to compile this tool.
 
 ### Building
+
 Clone this repo into your `$GOPATH/src/github.com/iotbzh` and use delivered Makefile:
+
 ```bash
  export GOPATH=$(realpath ~/workspace_go)
  mkdir -p $GOPATH/src/github.com/iotbzh
diff --git a/docs/images/nb_newtool.jpeg b/docs/images/nb_newtool.jpg
index fbf1f9f..fbf1f9f 100644
--- a/docs/images/nb_newtool.jpeg
+++ b/docs/images/nb_newtool.jpg
diff --git a/docs/images/nb_xds_options.jpeg b/docs/images/nb_xds_options.jpg
index 33a48bb..33a48bb 100644
--- a/docs/images/nb_xds_options.jpeg
+++ b/docs/images/nb_xds_options.jpg