accomodate to github's new file-delivery infrastructure

Author: flavius

README.markdown

@@ -28,7 +28,7 @@ If it returns 1 your vim supports ruby.
 
 ### Easy Installation (*nix only)
 
-    curl https://github.com/spf13/spf13-vim/raw/master/bootstrap.sh -o - | sh
+    curl https://raw.github.com/spf13/spf13-vim/master/bootstrap.sh -o - | sh
 
 or