Issue165 durack1 ncar demo scripts

@gleckler1 @doutriaux1 take a look at this and merge if all looks ok - they're demo files..

This is what/where the demo has been run on yellowstone:
```
[durack1@yslogin5 ~/141104_metrics]$ pwd
/glade/u/home/durack1/141104_metrics
[durack1@yslogin5 ~/141104_metrics]$ ls -al
total 448
drwxr-xr-x  7 durack1 ncar  16384 Nov 25 12:47 .
drwxr-xr-x 10 durack1 ncar  16384 Nov 25 11:38 ..
-rwxr-xr-x  1 durack1 ncar   7004 Nov 25 12:40 createXmlAndNcs.py
-rw-r--r--  1 durack1 ncar  17385 Nov  4 13:45 install_metrics.bash
drwxr-xr-x  2 durack1 ncar  16384 Nov 25 12:34 NCAR-CAM5_0p25deg
drwxr-xr-x  2 durack1 ncar  16384 Nov 25 12:26 NCAR-CAM5_1deg
drwxr-xr-x  2 durack1 ncar    512 Nov 24 21:09 _obsolete
-rw-r--r--  1 durack1 ncar   3598 Nov 25 12:46 pcmdi_input_parameters_test.py
-rw-r--r--  1 durack1 ncar   1307 Nov 25 12:47 pcmdi_input_parameters_test.pyc
drwxr-xr-x 10 durack1 ncar    512 Nov 24 23:09 PCMDI_METRICS
drwxr-xr-x  2 durack1 ncar  16384 Nov 25 12:47 sampletest_141125
-rw-r--r--  1 durack1 ncar 114205 Nov 25 12:26 test_NCAR-CAM5_0p25deg_atmos.xml
-rw-r--r--  1 durack1 ncar  91277 Nov 25 12:25 test_NCAR-CAM5_1deg_atmos.xml
```