Merge pull request #1 from gwartass/master

Pullni setup!
Refactoring server in order to make it easier support batch requests
Update jsonrpc test to the new method name
First draft of batch support. 

Will need refactoring. All tests pass however, previous functionality is not broken.
Respond with PARSE_ERROR in case of parse error
Test method that returns None
Refactoring, don't pass an exception, but rather raise it
Refactoring sending response
Refactoring of handling method response
Don't use try/except, but rather use errback
Update TODO
Better name for a variable
Update docstrings
Fix response in case of a single call in batch.

Previously it responded with a single response (not in list) in this case. It should respond
with a list with one response.
Better names for reqeust_content and request_json variables
Test V1 and V2 in one batch
Add some notes to the README
Update todos :-)
Setup.py: add classifiers for pypi
Attempt to persuade PyPI to accept readme in a file