Added ESDoc support

.esdoc.json

@@ -0,0 +1,13 @@
+{
+    "source": "./lib",
+    "destination": "./docs",
+    "plugins": [
+      {
+        "name": "esdoc-coverage-plugin", 
+        "option": {
+          "enable": true,
+          "kind": ["class", "method", "member", "get", "set", "constructor", "function", "variable"]
+        }
+      }
+    ]
+  }

.gitignore

@@ -14,6 +14,9 @@ lib-cov
 # Coverage directory used by tools like istanbul
 coverage
 
+# Documentation directory generated by ESDoc
+docs/
+
 # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
 .grunt
 

CONTRIBUTING.md

@@ -130,6 +130,7 @@ Generally, we follow the style guidelines as suggested by the official language.
 Please run your code through:
 
 - [ESLint](http://eslint.org/) with the standard style guide.
+- [ESDoc](https://github.com/sendgrid/nodejs-http-client/blob/master/USAGE.md) to check the documentation coverage of your added code.
 
 <a name="creating-a-pull-request"></a>
 ## Creating a Pull Request

USAGE.md

@@ -15,3 +15,15 @@ To run the example:
 ```bash
 node examples/example
 ```
+
+# Documentation
+
+If you would like to auto-generate documentation of the packages, you can do so locally by running:
+```
+./node_modules/.bin/esdoc
+```
+Using the .esdoc.json file, esdoc will create documentation in the docs directory. 
+
+## Checking docs coverage
+
+You will find a coverage.json file in the docs directory. This will contain information about the documentation coverage for each of the different files in this repo.