64-bit support, updated Mapbox SDK, pin colors

With PR #16 the module now has:

• 64 bit support
• ability to change pin colors
• Updated to latest Mapbox iOS SDK
• Ability to set individual pin colors
• Access mbtiles outside of /Resources directory

With the latest Mapbox iOS SDK, an access token will be required, such as:

mapbox.createView({
  accessToken: 'myAccestokenhere'
...

removeAnnotation, clearTileCache methods

New Methods

removeAnnotation("my title")

• Remove an annotation or shape using removeAnnotation() method, and passing the annotation/shape's tile as a string, or by passing the entire annotation/shape object.

removeAllAnnotations()

• Removes all annotations and shapes from the map

clearTileCache()

• Removes any map tile images that were cached while viewing a remove map.
• Remote maps are cached by default, so this is useful to call when you don't want any map caching, or when making styling changes to the remote map

Changes

• mapViewRegionDidChange now returns the new map center point's latitude and longitude
• Internally, createAnnotation is now using RMAnnotation and loading the RMMapLayer manually, same as with createShape. This will allow for more customization of the annotation.

addShape method, new Events

New Methods

• Added the addShape method for adding shapes to the map, including polygons, lines and routes.

New Events

• tapOnAnnotation
• longPressOnMap

Fixes

• backgroundColor on map now working

Initial Annotation Support

Added initial support for creating and adding annotations

Initial Release

Initial release with online and offline map support