docs(bufferToggle): add basic docs
docs(bufferToggle): add basic docs

ReactiveX/RxJS,Igorbek/rxjs5,adrianomelo/RxJS-1,RxJS-CN/RxJS-Docs-CN,martinsik/rxjs,IgorMinar/RxJS,staltz/RxJSNext,adrianomelo/RxJSNext,ReactiveX/RxJS,kwonoj/RxJS,jayphelps/rxjs,jayphelps/rxjs,benlesh/RxJS,justinwoo/RxJS,Igorbek/rxjs5,robwormald/RxJS,gluck/RxJS,RxJS-CN/RxJS-Docs-CN,SangKa/RxJS-Docs-CN,SangKa/RxJS-Docs-CN,robwormald/RxJS,elliotschi/rxjs,trxcllnt/RxJS,jinroh/RxJS,jadbox/RxJS,elliotschi/rxjs,jadbox/RxJS,Brocco/RxJS,RxJS-CN/RxJS-Docs-CN,benlesh/RxJS,Igorbek/rxjs5,trxcllnt/RxJS,elliotschi/rxjs,jayphelps/rxjs,adrianomelo/RxJSNext,ReactiveX/RxJS,staltz/RxJSNext,gluck/RxJS,jadbox/RxJS,robwormald/RxJS,martinsik/rxjs,adrianomelo/RxJSNext,martinsik/rxjs,IgorMinar/RxJS,ReactiveX/RxJS,adrianomelo/RxJS-1,SangKa/RxJS-Docs-CN,figueredo/RxJS,staltz/RxJSNext,mattpodwysocki/RxJS,figueredo/RxJS,kwonoj/RxJS,staltz/RxJSNext,ReactiveX/rxjs,jayphelps/rxjs,benlesh/RxJS,jinroh/RxJS,mattpodwysocki/RxJS,gluck/RxJS,adrianomelo/RxJSNext,kwonoj/RxJS,mattpodwysocki/RxJS,trxcllnt/RxJS,mattpodwysocki/RxJS,RxJS-CN/RxJS-Docs-CN,ReactiveX/rxjs,justinwoo/RxJS,justinwoo/RxJS,trxcllnt/RxJS,ReactiveX/rxjs,figueredo/RxJS,ReactiveX/rxjs,saneyuki/RxJS,gluck/RxJS,robwormald/RxJS,adrianomelo/RxJS-1,elliotschi/rxjs,saneyuki/RxJS,jayphelps/rxjs,Brocco/RxJS,jinroh/RxJS,justinwoo/RxJS,kwonoj/RxJS,adrianomelo/RxJS-1,SangKa/RxJS-Docs-CN,Igorbek/rxjs5,Brocco/RxJS,jadbox/RxJS,figueredo/RxJS,Brocco/RxJS,martinsik/rxjs,benlesh/RxJS,jinroh/RxJS