updates contributing.md

johnmichel · Oct 24, 2019 · 6d4ce77 · 6d4ce77
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diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
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 # Contributing
 
-* In order to have a library added to the extension, please ensure that the `test` portion of the block of code for the library includes more than just `window.LIBRARY_HERE` as part of the `if` statement for the existence of a library.  In the example below, note that in addition to `win.d3`, `win.d3.select` (one of the API methods) is also being tested for:
+* In order to have a library added to the extension, please ensure that:
+
+- A unique `id` is assigned.
+- The `test` portion of the block of code for the library includes more than just `window.LIBRARY_HERE` as part of the `if` statement for the existence of a library.  In the example below, note that in addition to `win.d3`, `win.d3.select` (one of the API methods) is also being tested for.
+
 ```JavaScript
 'D3': {
+        id: 'd3',
         icon: 'd3',
         url: 'http://d3js.org',
         test: function(win) {