Added Hide for ID

Added function to allow generic hide_on argument for metaboxes.
google map field added
gmap added on example file
Update Select2
Allow passing args to select2 when creating the select field
Fix Select2 Button styles
Save meta on attahchments
Rename map field JS for consistency
Update Gmaps to work with all the CMB hooks
Refactor + add elevation field
don't set zoom on every drag event
tweak the gmaps settings
Remove the upload field type hack
Don't display deprecated notice if passing invalid args
Merge branch 'master' into select-2-options

Conflicts:
	css/dist/cmb.min.css
	css/src/generic.css
Merge pull request #232 from humanmade/select-2-options

Select 2 options
Merge branch 'master' into better-args-parsing
merge new select2 args
Merge branch 'master' into emmunes
Test hide_on