'On' class to apply operations and perform commands + specs
New Enumerable extensions + specs
Changes in 'On' Apply/Perform
Changes in 'On' syntax + specs
Changes in access modifiers of propertiers(On class)
Directory helper method
New String extension methods to work with Encoding
Updating Readme.md
Merge pull request #1 from ialekseev/master

New extensions : String, Enumerable; On/Apply syntax fro applying functions to arrays