Implimented decryption. Dirty, but it works
refactored to make decryption easier to impliment in other kinds of captures (not just FileCaps)
Implimented decryption in LiveCap and RemoteCap
encryption_type is now case insensitive.
Updated documentation with information about decryption.

Also noted remote captures in README.md
Final update to documentation.
removed commented import statement from a previous iteration.
UnknownEncyptionStandardException now gives you more feedback.
Added gvar SUPPORTED_ENCRYPTION_STANDARDS to pyshark.Capture that contains all the supported encryptions.
Updated docs with SUPPORTED_ENCRYPTION_STANDARDS
Removed unneccesary string escapes.
Merge pull request #42 from mcarlsonallion/master

Enabled 802.11 Decryption