Cache .theano in travis

Author: aseyboldt

.travis.yml

@@ -1,6 +1,12 @@
 language: python
 sudo: false
 
+cache:
+  directories:
+    - $HOME/.theano
+    - $HOME/minicoda2
+    - $HOME/minicoda3
+
 before_install:
   - . ./scripts/install_miniconda.sh
   - sh -e /etc/init.d/xvfb start

scripts/install_miniconda.sh

@@ -16,7 +16,7 @@ else
 fi
 
 
-if [ ! -d $INSTALL_FOLDER ]; then
+if [ ! -d $INSTALL_FOLDER ] || [ ! -e $INSTALL_FOLDER/bin/conda ]; then
   if [ "$(uname)" == "Darwin" ]; then
     URL_OS="MacOSX"
   elif [ "$(expr substr "$(uname -s)" 1 5)" == "Linux" ]; then