Edits to installation guide
Update README.md

Whitespace fixes for sub lists and code.
Added missing python step
Merge pull request #521 from ioanpocol/master

LB-1243
LB-1164: As an editor, I want to filter posts on the timeline by verification status and assigned user

Removed filter by type.
Merge pull request #522 from nistormihai/master-to-delete

LB-1164: As an editor, I want to filter posts on the timeline by verific...
LB-1272 On embed replace "updated on 14:50" with "updated at 14:50"
Merge pull request #523 from patriciagarcia/LB-1272

LB-1272 On embed replace "updated on 14:50" with "updated at 14:50"
Merge pull request #440 from plaindocs/master

Editing installation guide