add Tagging section
add Processes and Threads section
fix words
add pysonar2 to Code Analysis section
add Data Visualization section
add Pyston add High Performance section
add gmail to Third-party APIs
add libs
new sub-categories
add pycrumbs
rearrange sections
remove useless
added scikit-image and scikit-video
Merge pull request #27 from ellisonleao/master

Add pyshorteners on URL Manipulation section
Added "Build Tools" section

Proposed tools: SCons and PlatformIO
add huey and mrq
Add webassets
Fix typo
Update README.md: Add pathlib
Update README.md: Add cornice REST framework