Updated tripod tables to handle modifiers and values
Updated script to show correct timestamp
Added error logging when no modifier passed in
Refactored for new SQL style functions around predicates
Rejigged predicate values around
Updated config for new tablespec format
Updated tests - check if data does not exist, check for multiple results
Updated docs
Removed predicateFunctions class var. Added vendor dir to .gitignore.
Merge branch 'master' into tripod-table-modifiers

Conflicts:
	.gitignore
Added config checker to mongo tripod tables
Added a test to check for invalid config
Added a test to loop through all valid predicate function configs
Added some docs and changed exception message.
Added more unit tests. Switched lowercase so that the string version is the else rather than array.
Replaced the exit with a throw error
Added composer.lock file
Merge pull request #1 from talis/tripod-table-modifiers

Updated tripod tables to handle modifiers and values