replace groupId `android.android` with `android`

replace groupId `android.android` with `android`; make this section more visible
Add Wear 4.4W API20 and L Preview
Readme
Merge pull request #230 from Shusshu/api20

Add Wear 4.4W API20 and L Preview
Add new aar libs in the doc
Merge pull request #231 from Shusshu/readme-support

Add new aar libs in the doc
Profiles
Merge pull request #232 from Shusshu/issue-profiles

Profiles
support-v4 & support-v7 are now packaged as aar instead of jar
Merge pull request #233 from Shusshu/supportaar

support-v4 & support-v7 are now packaged as aar instead of jar
Deprecate tools annotations as it was merged into the android sdk jar
Merge pull request #235 from Shusshu/deprecate-annotation

Deprecate tools annotations as it was merged into the android sdk jar
Merge pull request #228 from PaulVI/patch-1

replace groupId `android.android` with `android` in README
reverted back to thirdparty repo as default
upgraded to latest parent release
Use the correct source.properties directory for the google-gdk-19 module

This commit overrides the parent pom's properties-maven-plugin
configuration in order to specify the gdk.directory as the correct path
to the source.properties file.

fixes #248
Merge pull request #249 from royclarkson/GDK-DIR

Use the correct source.properties directory for the google-gdk-19 module