Implementing encoder.
Implementing decoder.
Implemented decoder.
Added week and code coverage reports.
Merge branch 'master' of github.com:joelpitk/pitpack

Conflicts:
	src/pitpack.Compression.Test/Encoder/LzwCodeTableTest.cs
	src/pitpack.Compression.Test/Encoder/LzwEncoderTest.cs
	src/pitpack.Compression/Encoder/ICodeTable.cs
	src/pitpack.Compression/Encoder/IEncoderInput.cs
	src/pitpack.Compression/Encoder/LzwEncoder.cs
	src/pitpack.Compression/ILzwCodeTable.cs
	src/pitpack.Compression/LzwCodeTable.cs
	src/pitpack.Compression/pitpack.Compression.csproj