Change Travis config, add description to the command line help

.travis.yml

@@ -1,8 +1,12 @@
 language: node_js
+
 node_js:
-  - "10"
-  - "9"
-  - "8"
-  - "7"
   - "6"
-  - "5"
+  - "7"
+
+cache:
+  directories:
+    - "node_modules"
+
+notifications:
+  email: false

README.md

@@ -8,26 +8,9 @@
 $ npm install package-age --global
 ```
 
-
 ## Usage
 
-```
-❯ package-age --help
-
-    Usage: package-age [options]
-
-    Options:
-
-      -v, --version           output the version number
-      -f, --file [optional]   path to the package.json
-      -y, --year [optional]   after how much years a package should be considered old
-      -m, --month [optional]  after how much months a package should be considered old
-      -a, --all               parameter to get all kinds of dependencies
-      -d, --dev               parameter to get the devDependencies
-      -p, --peer              parameter to get the peerDependencies
-      -b, --bundled           parameter to get the bundledDependencies
-      -h, --help              output usage information
-```
+<img src="carbon.png">
 
 ## License
 

index.js

@@ -16,6 +16,7 @@ const config = {
 
 commander
   .version(config.version, '-v, --version')
+  .description('A CLI for detecting old dependencies used in your project')
   .option('-f, --file [optional]', 'path to the package.json')
 
   .option('-y, --year [optional]', 'after how much years a package should be considered old')