Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,28 +1,28 @@
 
-#Stack Overflow
+# Stack Overflow
 **Stack Overflow** is a fantastic resource for programmers, with many active users who are usually able to answer questions much quicker than I can. 
 
 [Follow this link](http://stackoverflow.com/questions/ask?tags=reachability%20swift) to ask your question on SO
 
-#Raising an issue here
+# Raising an issue here
 
-###Has someone else raised the issue?
+### Has someone else raised the issue?
 Check through currently open AND closed issues. If the issue has already been raised, please comment on the existing one.
 
-###It doesn't work
+### It doesn't work
 "It doesn't work" doesn't help anyone solve your problem. What doesn't work?
 
 + It didn't compile?
 + It crashed?
 + It didn't show the correct Reachability state?
 
-###It won't compile
+### It won't compile
 If it won't compile, what error messages are you seeing? Include the code that's at fault - a screen shot might help here.
 
-###It crashed
+### It crashed
 If it crashed, include a stack-trace, and the code that's in error.
 
-###Other stuff
+### Other stuff
 + What version of Reachability.Swift are you using?
 + How is it installed? Manually, CocoaPods, Carthage?
 + Does it occur on device or simulator? Which device?