Added better twitter error handling to reveal if the error was a rate limit or not closes 77
Added better twitter error handling to reveal if the error was a rate limit or not closes 77

matt-edgedesign/Timelinejs,LauraHilliger/TimelineJS,deenjohn/TimelineJS,1modm/TimelineJS,james-logan/TimelineJS,angeliaz/TimelineJS,cweems/api-timeline-js,JoaquinSiabra/TimelineJS,noikiy/TimelineJS,ryekee/TimelineJS,angeliaz/TimelineJS,matt-edgedesign/Timelinejs,anxintiancai/TimelineJS,wangjun/TimelineJS,matt-edgedesign/Timelinejs,ryekee/TimelineJS,wangjun/TimelineJS,anxintiancai/TimelineJS,pom95/timeline,landsurveyorsunited/TimelineJS,azeemmufti/TimelineJS,noikiy/TimelineJS,pom95/timeline,NUKnightLab/TimelineJS,CrossLead/TimelineJS,eldabbagh/TimelineJS,chrismoulton/TimelineJS,LauraHilliger/TimelineJS,LauraHilliger/TimelineJS,noikiy/TimelineJS,anxintiancai/TimelineJS,JoaquinSiabra/TimelineJS,cweems/tc_timeline,CrossLead/TimelineJS,cweems/api-timeline-js,NUKnightLab/TimelineJS,deenjohn/TimelineJS,chrismoulton/TimelineJS,ycaihua/TimelineJS,zstao/TimelineJS,NUKnightLab/TimelineJS,landsurveyorsunited/TimelineJS,fobsquad/timeline-JStest,james-logan/TimelineJS,ycaihua/TimelineJS,deenjohn/TimelineJS,stea4lth/TimelineJS,eldabbagh/TimelineJS,stea4lth/TimelineJS,djaney/TimelineJS,azeemmufti/TimelineJS,wangjun/TimelineJS,1modm/TimelineJS,zstao/TimelineJS,james-logan/TimelineJS,ryekee/TimelineJS,pom95/timeline,JoaquinSiabra/TimelineJS,cweems/tc_timeline,stea4lth/TimelineJS,djaney/TimelineJS,landsurveyorsunited/TimelineJS,djaney/TimelineJS,ycaihua/TimelineJS,zstao/TimelineJS,1modm/TimelineJS