Fixed a couple of typos.

Author: andersio

README.md

@@ -24,16 +24,16 @@ The owner of a `Signal` has unilateral control of the event stream. Observers ma
 It is like a live TV feed — you can observe and react to the content, but you cannot have a side effect on the live feed or the TV station.
 
 ```swift
-let channel: Signal<Programme, NoError> = tvStation.channelOne
-channel.observeValues { programme in ... }
+let channel: Signal<Program, NoError> = tvStation.channelOne
+channel.observeValues { program in ... }
 ```
 
 #### `Event`: the basic transfer unit of an event stream.
 A `Signal` may have any arbitrary number of events carrying a value, following by an eventual terminal event of a specific reason.
 
 It is like a frame in a one-time live feed — seas of data frames carry the visual and audio data, but the feed would eventually be terminated with a special frame to indicate "end of stream".
 
-#### `SignalProducer`: deferred work that creates a stream of value.
+#### `SignalProducer`: deferred work that creates a stream of values.
 `SignalProducer` defers work — of which the output is represented as a stream of value — until it is started. For every invocation to start the `SignalProducer`, a new `Signal` is created and the deferred work is subsequently invoked.
 
 It is like a on-demand streaming service — even though the episode is streamed like a live TV feed, you can choose what you watch, when to start watching and when to interrupt it.