Removing the REACTIONS endpoint and replacing it with USER_REACTIONS
Removing the REACTIONS endpoint and replacing it with USER_REACTIONS

Removed the REACTIONS endpoint completely. 
Merged the removeReaction function and the removeUserReaction endpoint into one removeReaction endpoint.
Replaced any trace of the REACTIONS endpoint with the USER_REACTIONS endpoint (on lines 419 and 390)
izy521/node-discord,izy521/discord.io,zaza7/discord.io