Merge pull request #28 from mwl/master

Added missing Dependency Plugin targets
Merge pull request #29 from mwl/master

Added Google Web Toolkit plugin, "gwt:"
Added android:clean goal
fixed #30, Support -Dmaven.javadoc.skip=true
Support -DskipITs to skip integration tests only

Skip execution of integration tests only, see also http://maven.apache.org/plugins/maven-failsafe-plugin/examples/skipping-test.html
Merge pull request #32 from oschrenk/patch-1

Support -DskipITs to skip integration tests only
Update readme.md
Update readme.md
Adding enforcer:display-info 

Useful for debugging
Added gwt.compiler.skip option.
According to https://github.com/gwt-maven-plugin/gwt-maven-plugin/blob/master/src/main/java/org/codehaus/mojo/gwt/shell/CompileMojo.java#L64 gwt compilation can be skipped with -Dgwt.compiler.skip