Update README.md
Edits README.md to clarify that git 1.7.10 is required Master branch
Partially resolves Issue #5090
It would be ideal if the instructions linked to 'how' to update to 1.7.10.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Edits README.md to clarify that git 1.7.10 is required Master branch
Partially resolves Issue #5090
It would be ideal if the instructions linked to 'how' to update to 1.7.10.