Update README to include bijection-avro
Merge pull request #167 from hammer/patch-1

Update README to include bijection-avro
Backtick Array[Byte] in README

Prevents Markdown from eagerly turning "Byte" into a link and matches the style of `Array[Byte]` in following bullet.
Merge pull request #168 from hammer/patch-2

Backtick Array[Byte] in README