[doc] updated README
[doc] updated classes doc
[misc] fix README wiki link + added podspec as backup
[router] added router collection + tdd
[project] updated pbx
[router] collection implementation
[tests][router] completed collection tests
[router][exception] added exception class
[router] throw exception when routeName already used + fixed issue where a WIRouter would throw when routing with nil as argument
[project] moved files
[tests][builder] added test on requirements
[project] updated pbx