Adding null validation on build step data
License info; cleanup; help file refactoring;
Add validation warnings; Pull messages from code
v1.0.2
Merge branch 'null-validation' of github.com:mandiant/vsphere-cloud-plugin

Conflicts:
	pom.xml
Merge pull request #4 from mandiant/master

v1.0.2 - cleanup, refactoring, restructuring - a bunch of nice things.