Recommend cloning to shallow path

Prevents path length issues

docs/build-instructions/windows.md

@@ -14,12 +14,12 @@
 ## Instructions
 
   ```bat
-  cd C:\Users\<user>\github
-  git clone https://github.com/atom/atom/
+  cd C:\
+  git clone https://github.com/atom/atom
   cd atom
   script\build
   ```
-  
+
 ## Why do I have to use GitHub for Windows? Can't I just use my existing Git?
 
 You totally can! GitHub for Windows's Git Shell just takes less work to set up. You need to have Posix tools in your `%PATH%` (i.e. `grep`, `sed`, et al.), which isn't the default configuration when you install Git. To fix this, you probably need to fiddle with your system PATH.
@@ -39,4 +39,4 @@ If your Visual Studio is in a non-standard location, and you get the error `You
 
 Example:
 
-    vs2010Path = "H:/VS2010/Common7/IDE"
+    vs2010Path = "H:/VS2010/Common7/IDE"