Added MapType directive with tests + docs
Merge pull request #687 from Antwan86/feature/maptype-support

Feature : map-type directive support
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Merge branch 'master' into develop

Conflicts:
	README.markdown
	dist/angular-google-maps.js
	dist/angular-google-maps.min.js
map-type fixed '^uiGmapgoogleMap' to '^uiGmapGoogleMap'