Add a conformant implementations list.

Closes #59, closes #57.

implementations.md

@@ -0,0 +1,101 @@
+# Conformant Implementations
+
+There are many conformant implementations of Promises/A+. Here are the ones we know about and recommend. Note that an implementation's conformance is determined by it passing the <a href="https://github.com/promises-aplus/promises-tests">test suite</a>.
+
+Conformant implementations are encouraged to include <a href="https://rawgithub.com/promises-aplus/promises-spec/master/logo.svg">the Promises/A+ logo</a> in their README files with a link to the specification, using code like the following:
+
+```html
+<a href="http://promises-aplus.github.com/promises-spec">
+    <img src="http://promises-aplus.github.com/promises-spec/assets/logo-small.png"
+         alt="Promises/A+ logo" title="Promises/A+ 1.0 compliant" align="right" />
+</a>
+```
+
+<table>
+    <thead>
+        <tr>
+            <th>Implementation</th>
+            <th>Compliant Versions</th>
+            <th>Description</th>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td><a href="https://github.com/briancavalier/avow">avow</a></td>
+            <td>≥ 1.0</td>
+            <td>Example Promises/A+ implementation. Simple, tiny, fast, fully async</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/CodeCatalyst/promise.coffee">CodeCatalyst/promise.coffee</a></td>
+            <td>≥ 1.0</td>
+            <td>Promises/A+ compliant implementation in object-oriented CoffeeScript</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/kaerus/promise.js">kaerus/promise.js</a></td>
+            <td>≥ 0.1.1</td>
+            <td>A Promises/A+ library, originally developed for the ArangoDB client</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/novemberborn/legendary">legendary</a></td>
+            <td>≥ 0.1.0</td>
+            <td>Dabbling with promises. It’ll be legendary</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/aheckmann/mpromise">mpromise</a></td>
+            <td>≥ 0.0.1</td>
+            <td>A Promises/A+ conformant implementation, written for mongoose</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/eclipse/orion.client/blob/master/bundles/org.eclipse.orion.client.core/web/orion/Deferred.js">Orion Deferred</a></td>
+            <td>≥ ???</td>
+            <td>???</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/timjansen/PinkySwear.js">PinkySwear.js</a></td>
+            <td>≥ 0.0.1</td>
+            <td>Promises/A+ compliant in less than 400 bytes</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/satchmorun/promeso">promeso</a></td>
+            <td>≥ 0.0.3</td>
+            <td>A little Promises/A+ implementation</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/flams/emily/wiki/Promise">promesse</a></td>
+            <td>≥ 1.3.1</td>
+            <td>Emily's Promise/A+</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/RubenVerborgh/promiscuous/">promiscuous</a></td>
+            <td>≥ 0.1.0</td>
+            <td>A minimal and fast promise/deferred implementation</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/kriskowal/q">Q</a></td>
+            <td>≥ 0.8.12</td>
+            <td>A tool for making and composing asynchronous promises in JavaScript</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/tildeio/rsvp.js">rsvp.js</a></td>
+            <td>≥ 1.1</td>
+            <td>A lightweight library that provides tools for organizing asynchronous code</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/then/promise">then/promise</a></td>
+            <td>≥ 1.2</td>
+            <td>Bare bones Promises/A+ implementation</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/dfilatov/jspromise">vow</a></td>
+            <td>≥ 0.0.6</td>
+            <td>Promises/A+ implementation</td>
+        </tr>
+        <tr>
+            <td><a href="https://github.com/jharding/yapa">yapa</a></td>
+            <td>≥ 0.2.0</td>
+            <td>Yet another Promises/A+ implementation</td>
+        </tr>
+    </tbody>
+</table>
+
+Feel free to send a pull request to get yourself on this list!