Fix some sentences and add pip installation instructions
Merge pull request #17 from toshipon/master

Add langauge_matrix api
Merge pull request #18 from hermanschaaf/patch-1

Fix some sentences and add pip installation instructions
Update README.md

remove sudo
Merge pull request #19 from toshipon/master

Correct to use mock data
Merge pull request #20 from toshipon/master

Fix to refer to requirements.txt
Merge pull request #21 from toshipon/master

Fix relative path
Revert not to use requirements.txt