updated readme to explain new build options

Author: wimjongman

readme.md

@@ -8,7 +8,7 @@ It works on MS Windows, Mac OSX and Linux.
 
 install [git] (http://git-scm.com/downloads) and [maven] (http://maven.apache.org/download.cgi)
 
-###Installation
+##Build from source
 
 git clone https://github.com/jantje/arduino-eclipse-plugin
 
@@ -25,6 +25,29 @@ win32x32.cmd (if you are on 32 bits windows)
 
 For other platforms just inspect the cmd file for the path, navigate to the executable and run.
 
+##Build Options
+You can control the build with the folowing profiles
+* juno (default) (builds against the juno repositories (4.2))
+* kepler (builds agains the kepler repositories (4.3))
+* luna (builds agains the luna repositories (4.4))
+* win32 (builds for 32 bit windows)
+* win64 
+* linux32
+* linux64
+* mac32
+* mac64
+
+
+#####Examples:
+
+mvn verify -Plinux32,kepler
+
+mvn verify -Pwin32,juno,linux32
+
+
+##Building for other platforms
+mvn verify -Pbuild-all
+
 
 ##Developing (Improving) the Plugin