Create Category
Change Category to Categories
Merge branch 'sluo-CreateCategory-' of https://github.com/jhorbulyk/PairBasedChatRoom
Updated categories table only hold the adjacency list
Update Instructions.txt
Merge branch 'master' of https://github.com/jhorbulyk/PairBasedChatRoom
Update Instructions.txt
Merge branch 'master' into Jacob-CreatePostTable

Conflicts:
	DatabaseInitializationScript.sql
Add additional foreign key rules.