tweaks to diagrams
mend
updated read me
added lots of development tool gems. Initialized RSPEC. Initialized Guard.
added more diagrams for joiners
Merge branch 'jr_ERD_Diagrams' into dev
Merge branch 'jr_gem_setup' into dev
simplified ERD
Merge branch 'jr_ERD_Diagrams' into dev

Conflicts:
	Gemfile
	Gemfile.lock
	README.md
	admin/jr_working_folder/contracto_planning_diagrams.graffle