Fix platform.properties
Change PHP APIs version from implementation to specification
Update version number to 0.5.0
Fix import for NavUtils
Add final modifier
Custom wp-content name #14
Update README
Update version number to 0.5.1
Add php executable api
Support for RunCommand #16
Add wp-cli option to NewConfigurationPanel #16
Update README
Update version number to 0.6.0
Merge branch 'nb74dev'