Merge pull request #35 from andysim/ewald

Add Ewald and PME tutorial

Author: dgasmith

.travis.yml

@@ -30,7 +30,7 @@ install:
   - conda update -q conda
   - conda info -a
   - if [[ "$PYTHON_VER" == "2.7" ]]; then
-        conda create -q -n p4env python=$PYTHON_VER ci-psi4 psi4 numpy=1.12 matplotlib jupyter -c psi4;
+        conda create -q -n p4env python=$PYTHON_VER ci-psi4 psi4 numpy=1.12 matplotlib jupyter scipy -c psi4;
     else
         conda create -q -n p4env python=$PYTHON_VER ci-psi4 psi4 numpy=1.13 matplotlib jupyter scipy pylibefp -c psi4/label/dev -c psi4;
     fi