Updated README for v0.1.1

Removed unnecessary instructions; added API examples.
Updated README for v0.1.1

Removed unnecessary instructions; added API examples.
Some client tests take a sampling of results
Adding 'GW2Skin'
Adding 'fetchSkin:' for multiple fetches
Added separate spec files for each client request

The original client spect has been broken up into individual spec files,
each representing a group of API requests.
Grouping client specs in navigator
Changed 'objectID' -> 'id'; added Core Data test

Also, added experimental 'GW2Coin' & updated 'GW2Item'
More xccheckout
Merge branch 'master' into development

Conflicts:
	GW2Kit.xcworkspace/xcshareddata/GW2Kit.xccheckout