Merge pull request #29 from andy11/master

add a "--today" option to print today's tasks
Merge pull request #30 from andy11/master

extending -i functionality to --display output
Reorganize arguments
Merge pull request #31 from andy11/master

generalize function used for --today to work for next 'n' days and use it to...
Merge branch 'develop' of https://github.com/bsmt/wunderpy into develop
pep8 for api tests
Move tasks and lists to separate classes, add filtering to Wunderlist,
make CLI work with new task API. Fixes #28, also fixes #32.
Add changelog for upcoming 0.2.2 update.
Disable API tests by default
Remove bitdeli, github provides a similar feature now.