Merge pull request #19 from jtakakura/master

Changed the license headers and the package names
Don't require mainClassName to be specified in build.gradle as it can be
specified in the robovm.xml.
Upgraded the wrapper to use gradle 2.0. Changed the plugin artifact name to
'robovm-gradle-plugin'.
Changed the plugin artifact name to 'robovm-gradle-plugin'.
Changed version to 1.0.0-alpha-01 and updated to RoboVM version
1.0.0-alpha-01.
Undid version change.
Changed project name to robovm-gradle-plugin.
Added nexus plugin and pom info to publish to Maven Central.
Changed version to 1.0.0-alpha-01 and updated to RoboVM version
1.0.0-alpha-01.
Prepare for next development iteration.
Fixed compilation error after changes to Config.Builder in robovm/.
fixed sim device selection, updated gitignore for Eclipse project files
Added mavenLocal() repository to build.gradle.
Changed version to 1.0.0-alpha-02 and updated to RoboVM version
1.0.0-alpha-02.
Prepare for next development iteration.
Supported to specify the device name of simulator