Add mantid_total_scattering as a submodule

Unfortunately, just running it's setup.py is the only way I've gotten
things to work.

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "mantid_total_scattering"]
+	path = mantid_total_scattering
+	url = https://github.com/marshallmcdonnell/mantid_total_scattering.git

README.md

@@ -54,7 +54,15 @@ addie that way as well. After creating the virtual environment, run
 ```
 
 which will add a file, `mantid.pth` to your environment with the
-location of mantid. Then the normal
+location of mantid. Then you need to "develop" mantid_total_scattering
+
+```bash
+cd mantid_total_scattering
+python setup.py develop
+cd -
+```
+
+and finally the the normal
 
 ```bash
 python setup.py develop

addiedevel.sh

@@ -17,6 +17,11 @@ else
 fi
 
 PYTHON_VERSION=`$CMD -c 'import sys; version=sys.version_info[:3]; print("{0}.{1}".format(*version))'`
+# build mantid_total_scattering
+cd mantid_total_scattering
+$CMD setup.py build
+cd -
+# build addie
 $CMD setup.py build
 
 # launch addie