Issue 15 deploy simplification

See merge request !8

# Conflicts:
#   README.md

Merge branch 'issue-15-deploy-simplification' of https://gitlab.ow2.org/ggi/my-ggi-board into issue-15-deploy-simplification

improves doc for clean fork process

Closes #19

See merge request !7

Merge remote-tracking branch 'refs/remotes/origin/issue-15-deploy-simplification' into issue-15-deploy-simplification

Merge branch 'issue-15-deploy-simplification' of https://gitlab.ow2.org/ggi/my-ggi-board into issue-15-deploy-simplification

This reverts commit 4e6f082e

fix Readme

See merge request !6

Update Documentation

See merge request !5