Update README.md

The link to the channel coding directory is added.

Author: kirlf

README.md

@@ -17,7 +17,7 @@ Objectives
 
 Available Features
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-Channel Coding
+[Channel Coding](https://github.com/veeresht/CommPy/tree/master/commpy/channelcoding)
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 - Encoder for Convolutional Codes (Polynomial, Recursive Systematic). Supports all rates and puncture matrices.
 - Viterbi Decoder for Convolutional Codes (Hard Decision Output).