Merge pull request #26 from iwismer/py3_shebangs

Update all shebangs to python 3

build.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ''' this module is used to build whitebox-tools.
 '''
 import os

lib_test.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ''' This script is intended to experiment with the use of a whitebox_tools shared library (DLL).
 It is experimental and is not intended for widespread use.
 '''

wb_runner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # This script is part of the WhiteboxTools geospatial analysis library.
 # Authors: Dr. John Lindsay

whitebox_example.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ''' This module provides examples of how to call the whitebox_tool script and the
 whitebox-tools geospatial analysis library using Python code.
 '''

whitebox_plugin_generator.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 """
 This script is just used to automatically generate the convenience methods for each
 of the plugin tools in the whitebox_tools.py script. It should be run each time new

whitebox_tools.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ''' This file is intended to be a helper for running whitebox-tools plugins from a Python script.
 See whitebox_example.py for an example of how to use it.
 '''