Spelling correction

Summary: Closes #358

Differential Revision: D4392132

Pulled By: lawrencelomax

fbshipit-source-id: 5b90ef49849ef4cb48dc2f6f918846fd4154058a

README.md

@@ -48,7 +48,7 @@ For a high level overview:
 - `FBSimulator` is a reference type that represents an individual Simulator. It has a number of convenience methods for accessing information about a Simulator.
 - `FBSimulatorInteraction` and it's categories forms the API of possible ways of interacting with a Simulator. These range from booting Simulators, installing & running Applications, uploading photos & videos and more.
 - `FBSimulatorHistory` is a record of all the events that happen to a Simulator. It can be queried in a variety of ways and serialized to file.
-- `FBSimulatorDiagnositcs` is a facade around available diagnostics for a Simulator. It fetches static logs such as the System Log on-demand and receives new logs from components such as `FBFramebufferVideo`.
+- `FBSimulatorDiagnostics` is a facade around available diagnostics for a Simulator. It fetches static logs such as the System Log on-demand and receives new logs from components such as `FBFramebufferVideo`.
 - Configuration objects: `FBApplicationLaunchConfiguration`, `FBAgentLaunchConfiguration`, `FBSimulatorApplication`, `FBSimulatorControlConfiguration`, `FBSimulatorConfiguration` & `FBSimulatorBootConfiguration`.
 
 To launch Safari on an iPhone 5, you can use the following: