small updates to README with feature matrix and other improvements
fix readme links
support for schema compatibility
Should not write data if the RL/DL is all zeroes
add a bit more pig detail
Merge pull request #73 from aniket486/write_no_data_for_no_RL_DL

Should not write data if the RL/DL is all zeroes
fix dictionary decoding bug when more than one encoding is used
Merge pull request #71 from Parquet/update_readme

Update Readme
add negative tests
Merge pull request #72 from Parquet/schema_compatibility

support for schema compatibility
fix schema compat
Merge branch 'master' into schema_compatibility
Merge pull request #75 from Parquet/schema_compatibility

Schema compatibility fix
fix call to converter
Merge pull request #74 from Parquet/fix_dictionary_decoding

fix dictionary decoding bug when more than one encoding is used
Updated from master