Added bijection-avro module which provide various avro based injections
updated Guava to version 14.0. Added bijections for Base16, Base32, Base32HEX, Base64, Base64Url
changed Avro Json Injection to [T,String] from [T,Array[Bytes]]
updated the property description to String from Array[Byte]
Merge pull request #129 from MuhammadAshraf/develop

Added bijection-avro module. Updated bijection-guava to support various encodings