Merge pull request #22 from Submitty/python3

switch to just python, to make travis happy (it doesnt have python3.5)

Author: bmcutler

bin/concatenate

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Given a directory containing student submissions, create a new directory

bin/count_function

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Determine whether a file contains a function call to the given name.

bin/count_node

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Determine whether a file contains an AST node.

bin/count_token

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Determine whether a file contains a token.

bin/highlight

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Given a directory containing concatenated source files, run pygmentize

bin/plagiarism

@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.5
+#!/usr/bin/env python3
 
 """
 Run plagiarism detection system.