Simplify travis file

Now that we can npm install things,
we should be able to eschew all that cruft of `wget`ting and whatever.

Author: joneshf

.travis.yml

@@ -2,14 +2,9 @@ language: node_js
 sudo: false
 node_js:
   - 0.10
-env:
-  - PATH=$HOME/purescript:$PATH
 install:
-  - TAG=$(wget -q -O - https://github.com/purescript/purescript/releases/latest --server-response --max-redirect 0 2>&1 | sed -n -e 's/.*Location:.*tag\///p')
-  - wget -O $HOME/purescript.tar.gz https://github.com/purescript/purescript/releases/download/$TAG/linux64.tar.gz
-  - tar -xvf $HOME/purescript.tar.gz -C $HOME/
-  - chmod a+x $HOME/purescript
   - npm install -g bower gulp
-  - npm install && bower install
+  - npm install
+  - bower install
 script:
   - gulp

package.json

@@ -24,6 +24,7 @@
     "gulp-purescript": "^0.5.0",
     "gulp-run": "~1.6.4",
     "gulp-tag-version": "^1.2.1",
+    "purescript": "^0.7.1",
     "run-sequence": "^1.1.1"
   }
 }