remove cruft and fix the test script

Author: zeke

Makefile

@@ -1,22 +1,19 @@
 # is-url
 
-  Check whether a string is a URL.
+Check whether a string is a URL.
 
 ## Installation
 
-```
-$ component install segmentio/is-url
-```
-```
-$ npm install is-url
+```sh
+npm install is-url
 ```
 
 ## API
 
-### isUrl(string)
+### `isUrl(string)`
 
-  Checks whether `string` is a URL.
+Returns a Boolean indicating whether `string` is a URL.
 
 ## License
 
-  MIT
+MIT

Readme.md

@@ -1,9 +1,10 @@
 {
   "name": "is-url",
+  "description": "Check whether a string is a URL.",
   "repository": "https://github.com/segmentio/is-url",
   "version": "1.2.3",
   "scripts": {
-    "test": "make test"
+    "test": "mocha --reporter spec"
   },
   "license": "MIT",
   "devDependencies": {