Add pyaml as install dependency

Signed-off-by: refnode <refnode@gmail.com>
better layout and some typo fixes
Trying to fix Travis config

* pip install setuptools as first step

Signed-off-by: refnode <refnode@gmail.com>
Merge pull request #1 from ocfuu/patch-2

Fix some typos in README
Merge remote-tracking branch 'origin/feature-travis-setup'