Move code to named package
Remove managedSourceDirectories modification

This fixes adding correct source directories to Idea project files with
sbt-idea plugin version 1.4.0+. 

Plugin authors should not modify 'managedSourceDirectories' directly, 
but only provide 'sourceGenerator' which generates sources under a 
subdirectory of 'sourceManaged' setting of the scope as described here:
http://www.scala-sbt.org/0.12.3/docs/Howto/generatefiles.html
Merge pull request #148 from mpeltonen/topic/named_package

Move code to named package
Revert "Move code to named package"

This reverts commit 9994f4628718ed5ee55bf9607b94186252441bbb.
Set package to org.scalasbt.androidplugin
Specify snapshot version with timestamp
Update README.md
Merge pull request #170 from mpeltonen/topic/generated_sources_path

Remove managedSourceDirectories modification
generate proguard config from aapt -G and use it in proguard

as now aapt tool can generate proguard config with used system components
(Fragments, Views, Activities, Services and Application) we can use it in proguard task to
decrease custom proguard config
remove unnecessary proguard options, as they will be generated by aapt -G
Remove timestamp from snapshot version
Change package name to sbtandroid, following sbt-closure and sbt-dropbox-plugin
Change artifact name to sbt-android to match sbt-closure
[fix] No Apklib extraction for the provided scope
Add resPath task to allow specifying additional resource directories
Fix aaptGenerateTask to use resource dirs from resPath
Fixing aapt, idl and dx paths from new build-tools
Add build tools detection code from fxthomas