try github site integration
fix pom conf for github pages
add coverage report to site
improve memory usage of metadata
license headers
fix compilation issue with 1.6
Add support for schema projection in Avro

This commit updates the AvroReadSupport and AvroParquetInputFormat
classes to allow users to request a schema projection.
Merge pull request #96 from massie/master

Add support for schema projection in Avro
Add support for predicate pushdown in ParquetInputFormat

This commit allows users to define an UnboundRecordFilter to be
used when reading Parquet records from the ParquetInputFormat.
Merge pull request #98 from massie/matt-pushdown

Add support for predicate pushdown in ParquetInputFormat
Merge pull request #97 from Parquet/improve_memory_usage_of_metadata

improve memory usage of metadata
Start implementation parquet for hive :

 - Read simple data (INT32, INT64, DOUBLE, FLOAT, BOOLEAN, BINARY -String)
 - Write simple data (INT32, INT64, FLOAT, DOUBLE, BOOLEAN, BINARY -String)
 - Read data works only if HiveInputFormat is set (not CombineHive)

TODO :

 - Support complex type (struct, map, array)
 - Support CombineHive
 - Unit test :)
Remove any K,V from DeprecatedXXFormat
Add support for CombineHiveInputFormat

- This recreates the input splits by reading each file's metadata
- This is slower than being able to get our InputSplits directly,
but still faster than calling getSplits over and over again
Improve column reading

 - Trying to only read the right column (work in progress)
Can write complex types
Can read some complex types

- Structs should be entirely good
- Array and maps do not seem to work correctly
rename one parameter
Some improvements on the hive implementation :

 - start to read complex type (struct done !, other in progress)
 - start to write complex type (struct done !, other maybe done :) )
 - try to give only the requested schema to parquet objects but
we have some troubles with the way readsupport object is initialized. Trying few
work around with hive to force the jobConf to be updated (like they do for
RCFile in HiveInputFormat). Not working when getSplits is called because
we have no path (in progress).

Unit test :

 - Just a start only one very very tiny small is working to test hiveschemaconverter
 - working on the SerDe testing (trying to create a parquet file first in unit test)

The code is not clean, neither optimize. 'Make it work, Make it right, Make it fast'
only on the first step :p
Indentation : retab to 2 spaces. Nothing else.