Add "protobuf-compiler" to dependencies
Merge pull request #1 from ikatson/protobuf-compiler-dep

Add "protobuf-compiler" to dependencies
Small fixes in README.md.
Properly add new chains to the chunk ids' hash table for chunks with the same rolling hashes.
Lower the required cmake version to 2.8.2.
Fix a typo in README.md.
Release version 1.1.
Correctly use FIND_PACKAGE_HANDLE_STANDARD_ARGS in FindLibLZMA.cmake.
Lower the requirement of CMake to 2.8.2 in README.md.