Merge branch 'baagaard/fix-file-mode'

* baagaard/fix-file-mode:
  Make Python scripts in examples executable.

Author: baagaard-usgs

examples/2d/gravity/plot_soln.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import h5py
 import numpy
 

examples/2d/greensfns/README

@@ -92,7 +92,7 @@ Step 4.  Plot the true and predicted slip values (**requires matplotlib**).
   forward simulation.  If you have matplotlib installed, you can run
   this script by typing:
 
-    plot_invresults.py --solution=output/eqsim-fault.h5 --predicted=output/slip_inverted.txt
+    ./plot_invresults.py --solution=output/eqsim-fault.h5 --predicted=output/slip_inverted.txt
 
   This will display a matplotlib window with the true solution in
   black and the predicted solution corresponding to different values

examples/2d/greensfns/invert_slip.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # This python script extracts the changes in fault tractions from
 # step01 and combines them with background depth-dependent fault
 # tractions to create initial fault tractions to drive frictional

examples/2d/greensfns/reverse/plot_invresults.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # Compute the analytical steady-state solution.
 #
 # The shear traction on the fault is balanced by the shear traction