Update Mapbox.podspec

GRMustache was not updated, but the submodule was.
Merge pull request #408 from GannettDigital/release

fix GRMustache pinning in podspec
add missing header docs for new API
remove old API docs link
add new docs scripts
update docs in podspec
add new docs scripts
Merge branch 'release' of github.com:mapbox/mapbox-ios-sdk into release
flesh out docs to fully support RMCompositeSource
fixes #443: merge heading fixes from @htthach
clarify pull request policy
clarify pull request policy
new resource bundle format
Merge branch 'develop' of github.com:mapbox/mapbox-ios-sdk into develop
namespacing tweak
new resource bundle format
namespacing tweak
Merge commit 'e7ef863b2386645b43db98809ab8b434acf53233' into tripomatic
merge develop for 1.2.0 release
update changelog for 1.2.0