Adding README to modules

lib/adapters/README.md

@@ -0,0 +1,38 @@
+# axios // adapters
+
+The modules under `adapters/` are modules that handle dispatching a request and settling a `Promise` once a response is received.
+
+## Example
+
+```js
+var settle = require('../helpers/settle');
+var transformData = require('./../helpers/transformData');
+
+module.exports myAdapter(resolve, reject, config) {
+  // At this point:
+  //  - config has been merged with defaults
+  //  - request transformers have already run
+  //  - request interceptors have already run
+  
+  // Make the request using config provided/
+  // Upon response settle the Promise
+  
+  var response = {
+    data: transformData(
+      responseData,
+      responseHeaders,
+      config.transformResponse
+    ),
+    status: request.status,
+    statusText: request.statusText,
+    headers: responseHeaders,
+    config: config,
+    request: request
+  };
+
+  settle(resolve, reject, response);
+
+  // From here:
+  //  - response interceptors will run
+}
+```