Code and knowledge transfer from GilbertLabUCSF repository and issues

[abearab]

• [x] #7
• [x] Fix a bug related to growth normalization
  • [x] #19
  • [x] https://github.com/GilbertLabUCSF/ScreenPro2/issues/24
• [x] Add a description for basic analysis of https://github.com/GilbertLabUCSF/ScreenPro2/issues/17
• [x] Add a description for basic analysis of https://github.com/GilbertLabUCSF/ScreenPro2/issues/15
  • [x] Fix growth normalization in the README
• [x] Introduce ScreenPro object
  • [x] #30

[abearab]

Closing this for now.