Update README.md

Configuration header actually appears as "Gitlab Merge Request Builder", not "Gitlab Merge Requests Builder"
http access is sufficient for cloning
Make use of HTTP URL using config option
Merge pull request #84 from criteo/forked-merge-requests

Allow use of HTTP URL for source repository
Merge pull request #83 from kryger/master

Update README.md
Fixed small typos in README

I've fixed some small typos in the README.md file.

Thanks for your work!
Merge pull request #89 from svijee/patch-1

Fixed small typos in README
Encrypt API token and make field password for security
Switch default cron to evenly spaced
Merge pull request #90 from mc1arke/encryptApiToken

Encrypt API token and make field password for security
Merge updated master onto changes
Merge pull request #91 from mc1arke/cronSpacing

Switch default cron to evenly spaced