use is_notification property for request
add travis config
update .travis.yml
add badges
add python versions to support
update travis and tox files
update basepython for tox
Merge pull request #6 from jw/master

Added pep8 and python 3.3 check
add newline to the end of file
add python 3.3 to classifiers.
Update version: add python 3.3 to classifiers.
Merge branch 'master' into develop
use tox environments in travis config file
merge with develop
update README
add pylama linters test to tox
Merge branch 'develop' of https://github.com/pavlov99/json-rpc into develop
remove six from dependecies. FIX issue #1
add coverage to project
add coverage report to travis file