Force the path to the emacs installation.

Author: ardumont

.travis.yml

@@ -27,15 +27,16 @@ before_install:
   - make deps
   - cask --version
     # install the matrix's emacs version (except for 24.3 which is already installed)
-  - evm install $EVM_EMACS --use --force
-  - emacs --version
+  - evm install $EVM_EMACS --use --force || echo "Already installed, Skip!"
+  - export EMACS=/usr/local/evm/$EVM_EMACS
+  - $EMACS --version
   - env | grep -i emacs
 
 install:
   - cask
 
 script:
-  lsb_release -a && emacs --version && make check
+  lsb_release -a && $EMACS --version && make EMACS=$EMACS check
 
 notifications:
   email: false