Setting our maven release plugin to indent the scm tag 4 spaces after a release

This should avoid the annoying mis-alignment of xml elements in our POMs after every release
Merge pull request #32 from tvaughan77/RE-1934

Setting our maven release plugin to indent the scm tag 4 spaces after a release
Merge branch 'master' of github.com:opower/opower-parent into RE-1933

Conflicts:
	release_notes.txt
Updating release notes