node-git rewuirements for travis

.travis.yml

 language: node_js
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - libstdc++-4.9-dev
 node_js:
   - "6"
   - "5"
@@ -11,5 +17,7 @@ cache:
     - node_modules
     - build
 script: 
+  - npm install
   - npm i -g nexe
   - nexe
+

package.json

@@ -37,13 +37,8 @@
     "babel": "^6.5.2",
     "camo": "^0.12.3",
     "chalk": "^1.1.3",
-    "commander": "^2.9.0",
-    "mongoose": "^4.8.2",
     "nedb": "^1.8.0",
     "nodegit": "^0.17.0",
-    "shelljs": "^0.7.6",
-    "tingodb": "^0.5.1",
-    "tungus": "0.0.5",
     "vorpal": "^1.11.4"
   },
   "nexe": {