Added external directory

.travis.yml

@@ -21,6 +21,7 @@ addons:
     - gcc
     - liblapack-dev
     - libblas-dev
+    - wget
 
 env:
   - OPAMROOT=$HOME/.opam

README.md

@@ -14,7 +14,7 @@ A programming environment for wave function methods
 
 * Master: [![master build status](https://travis-ci.org/QuantumPackage/qp2.svg?branch=master)](https://travis-ci.org/QuantumPackage/qp2)
 * Development branch : [![dev build status](https://travis-ci.org/QuantumPackage/qp2.svg?branch=develop)](https://travis-ci.org/QuantumPackage/qp2)
-* Documentation [![Doc Status](https://quantum-package.readthedocs.io/en/latest/?badge=latest)
+* Documentation [![Doc Status](https://quantum-package.readthedocs.io/en/latest/?badge=master)
 
 
 # Credits

external/.gitignore

@@ -0,0 +1,2 @@
+*
+