add doc/install from website, update README.md
update doc/install
THRIFT-2558: CSharp gen tries to add str + int
Client: C# Compiler
Patch: Randy Abernethy

The C# generator attempts to throw a str + int string in
several places producing undesirable results. This patch
uses stringstream to concatenate the string representations.
THRIFT-2555 excessive "unused field" comments
Client: Go
Patch: Jens Geyer
THRIFT-2554 double initialization in generated Read() method
Client: C#
Patch: Jens Geyer
THRIFT-847 Test Framework harmonization across all languages

Added 'ssl' tests for python tests.
Added '-transport arg (=buffered) transport: buffered, framed, http' to test/py/TestServer.py and test/py/TestClient.py and removed '-framed' arguement.
Changed test/py/RunClientServer.py to match above changes.
Added tests to compact protocol in python cases.
Added tests to test BinaryAccelarated protocol with Binary Protocol.
Changed py/TestClient.py and py/TestServer.py from --proto to --protocol parameter

Patch: Chamila Dilshan Wijayarathna & Roger Meier
THRIFT-2560 Thrift compiler generator tries to concat ints with strings using +
Client: Compiler
Patch: Jens Geyer
THRIFT-2435 Java compiler doesn't like struct member names that are identical to an existing enum or struct type
Client: java
Patch: Jens Geyer

Fixed a potential nullptr dereference introduced by that patch (Coverity ID 1216835)