Corrected a bad tab in the compositor script.

scripts/compositor.py

diff --git a/scripts/compositor.py b/scripts/compositor.py
old mode 100644
new mode 100755
index 00b96b8..9e50ab9
--- a/scripts/compositor.py
+++ b/scripts/compositor.py
@@ -74,7 +74,7 @@
 
         # Now go back to the project top level and place the fill cell.
         print('load ' + project, file=ofile)
-	print('select top cell', file=ofile)	
+        print('select top cell', file=ofile)	
         print('getcell ' + project + '_fill_pattern child 0 0', file=ofile)
 
         # Move existing origin to (6um, 6um) for seal ring placement