articles/modeling/sending-http-requests (#153)

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* version 2.0

* Update sending-http-requests.md

* Update sending-http-requests.md

articles/modeling/sending-http-requests.md

@@ -1 +1,34 @@
+# Sending HTTP Requests
 
+<!---Gif of simple request plus extending spec--->
+
+## What
+
+Use the HTTP Request Maker to send requests to the endpoints defined in your specification, extend your specification with new endpoints, or send a request to any endpoint.
+
+## How
+
+1.  Click **HTTP** in the top tool bar located above the editor.
+2.  Select a **method** from the first dropwdown.
+3.  Choose a **path** from the next dropdown, or enter any **valid API endpoint**.
+4.  If the variables tab is present, fill in any required values
+5.  Use the tabbed menu to add headers, query params, request body information, or authentication.
+6.  Click **send** and view the results.
+
+> #### Bonus
+>
+> Click **Extend Spec** to append or alter your specification using the information supplied in the request maker.
+
+## Additional Notes
+
+* The Code Generation tab can but used to view your request in another language so it can be sent through other means.
+
+* If a path or endpoint is selected from your current specification, the tabbed menu will prepopulate with any parameters defined in the spec.
+
+* To add variable path parameters, wrap the parameter name in the path in curly braces like so `/path/{param}` and then fill in the value in the Variables tab.
+
+* To use environment variables in your request, enter `{$$.env.variable_name}` as the value and the populated value can be viewed or changed in the variables tab.
+
+---
+**Related Articles**
+[Using Environment Variables](./variables-environment.md)