Merge branch 'release'

docs/source/user_guide.rst

@@ -15,7 +15,7 @@ The PiFinder is a self-contained telescope positioning device.  It will let you
 
 In order to direct you to wonders of the night sky, the PiFinder needs to know where your telescope is currently pointed.  The primary way it does this is directly, but taking photos of the night sky and examining the star patterns to determine what section of the sky it's seeing.  It can do this incredibly fast (up to two times per second!) and very accurately.  This only works well if your telescope is not moving, so it couples this very accurate system with an accelerometer to provide an estimate of how far your telescope has moved from the last known position.  This estimate will contain some error, but as soon as you stop moving the scope a new photo will be taken and any inaccuracty will be corrected.
 
-Along with knowing where your telescope is pointing, the PiFidner knows where thousands of interesting objects are located. It can use these two pieces of information to indicate how you should move your telescope to bring any of those thousands of objects into your eyepiece.  Since it's directly observing where your telescope is pointing, you can be assured you are on target!
+Along with knowing where your telescope is pointing, the PiFinder knows where thousands of interesting objects are located. It can use these two pieces of information to indicate how you should move your telescope to bring any of those thousands of objects into your eyepiece.  Since it's directly observing where your telescope is pointing, you can be assured you are on target!
 
 
 Observing Screens