Merge pull request Reactive-Extensions#112 from sirbarrence/patch-3

Fix $toObservable formatting in docs

Author: mattpodwysocki

docs/readme.md

@@ -24,7 +24,7 @@ Observable Methods:
 - [`$createObservableFunction`](#createobservablefunctionfunctionname-listener)
 - [`$digestObservables`](#digestobservables)
 - [`$eventToObservable`](#eventtoobservableeventname)
-- ['$toObservable'](#toobservablewatchexpression-objectequality)
+- [`$toObservable`](#toobservablewatchexpression-objectequality)
 
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