Add a CocoaDocs configuration file

Reference our additional documentation resources
Reference new location for release notes

Older release notes have been moved to the wiki, while newer releases will be mainted through the GitHub releases feature.
Migrated Installation information to the wiki
Moved example usage to the wiki
Migrated building from source to the wiki
Merge pull request #83 from zachberger/cocoadocs

Add a CocoaDocs configuration file
Merge pull request #79 from zachberger/readme-updates

Migrate sections of README.md to the wiki