fetch 100 comments per page from github api

this closes #3
oops

committed by mistake
remove github_user_id from session on logout
show markdown using showdown lib
use marked.js & highlight.js instead of showdown
Merge pull request #15 from davidbrai/show_markdown

Show markdown
this closes #15
readme: some more help getting started
add travis-ci builds
change requirements file so travis-ci can build

When using git+ssh it asks to verify the remote ssh host.
This caused travis-ci to hang.
add empty settings file
add mongodb to travis-ci services
build only on python 2.7
another attempt of separating local config

default config file is now config.py
you can override it by adding to local_config.py
Merge pull request #17 from davidbrai/travis2

Add travis-ci builds
add build status to README
Update README.md
Merge remote-tracking branch 'origin/master' into multirepo

Conflicts:
	app.py