Minor typo fixes (#97)

Author: Luís Fonseca

README.md

@@ -154,7 +154,7 @@ if res.Sent() {
 
 ## Context & Timeouts
 
-For better control over request cancelations and timeouts APNS/2 supports
+For better control over request cancellations and timeouts APNS/2 supports
 contexts. Using a context can be helpful if you want to cancel all pushes when
 the parent process is cancelled, or need finer grained control over individual
 push timeouts. See the [Google post](https://blog.golang.org/context) for more

client.go

@@ -133,13 +133,13 @@ func (c *Client) Production() *Client {
 // indicating whether the notification was accepted or rejected by the APNs
 // gateway, or an error if something goes wrong.
 //
-// Use PushWithContext if you need better cancelation and timeout control.
+// Use PushWithContext if you need better cancellation and timeout control.
 func (c *Client) Push(n *Notification) (*Response, error) {
 	return c.PushWithContext(nil, n)
 }
 
 // PushWithContext sends a Notification to the APNs gateway. Context carries a
-// deadline and a cancelation signal and allows you to close long running
+// deadline and a cancellation signal and allows you to close long running
 // requests when the context timeout is exceeded. Context can be nil, for
 // backwards compatibility.
 //

client_go16.go

@@ -9,7 +9,7 @@ import (
 	"golang.org/x/net/context/ctxhttp"
 )
 
-// A Context carries a deadline, a cancelation signal, and other values across
+// A Context carries a deadline, a cancellation signal, and other values across
 // API boundaries.
 //
 // Context's methods may be called by multiple goroutines simultaneously.

client_go17.go

@@ -7,7 +7,7 @@ import (
 	"net/http"
 )
 
-// A Context carries a deadline, a cancelation signal, and other values across
+// A Context carries a deadline, a cancellation signal, and other values across
 // API boundaries.
 //
 // Context's methods may be called by multiple goroutines simultaneously.

response.go

@@ -110,7 +110,7 @@ const (
 // surrounding the rejection.
 type Response struct {
 
-	// The HTTP status code retuened by APNs.
+	// The HTTP status code returned by APNs.
 	// A 200 value indicates that the notification was successfully sent.
 	// For a list of other possible status codes, see table 6-4 in the Apple Local
 	// and Remote Notification Programming Guide.