Updated Swift usage

There is no need for a bridging header when using Swift.

Unsubstantial Changes

• Added changelog to Pod release.

API Update

• Major script update to better adapt to changes in token formatting
• Bulk of library moved to .h files
• Library files consolidated
• API updated to align with token naming

Winter ’17 Design Tokens

Winter 17 tokens (#8)

* preparing Winter17 build

* more work on build scripts

Summer ’16 tokens

• Summer ’16 tokens
• build scripts updates
• minor improvements

Spring ’16 design tokens

v2.0.5

match slds 2.0.5