This patch includes an updated README version.
Changes include:
- update of description paragraph
- addition of feature
- addition of background on the subject column
Change-Id: Id95c90e63dc74aeaba4d4d6b59dd79646020cad1
Replace the old or invalid http doc links with the lastest ones
according to the official OpenStack website.
Change-Id: I4a0f7d8a06dce7ada20cb84aa335a5b30c61ca2f