Created gopherbot (markdown)

gopherbot.md

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+# gopherbot
+
+This page outlines all interactive gopherbot functionality. Most of the tasks gopherbot performs do not require human intervention, however it is starting to learn new tricks.
+
+## Adding/Removing Labels
+
+You may add or remove labels by telling gopherbot what you'd like to do.
+
+`@gopherbot, please add labels NeedsFix,help wanted and remove label needsinvestigation`
+
+The comma after @gopherbot and the `please`, `and`, `add`, and `label[s]` keywords are optional. Adding a label is the default, so you can have the command be much more terse if you wish.
+
+`@gopherbot needsfix, help wanted remove needsinvestigation`
+
+The above command will achieve the same results as the first command.
+
+If you don't wish to remove anything, you can omit the `remove` keyword.
+
+`@gopherbot needsfix, help wanted`
+
+The above command will add the `NeedsFix` and `help wanted` labels. Notice how labels must be separated by a comma (or semicolon). This is to account for those with spaces in them like `help wanted`. You cannot quote the labels.
+
+`@gopherbot needsfix "help wanted"` **← Does not work**
+
+Casing also doesn't matter. `needsfix` is equivalent to `NeedsFix`. gopherbot will figure out the right label for you.
+
+There are some labels that are not allowed to be added or removed. Those can be seen in the `labelChangeBlacklisted` function in the [source](https://github.com/golang/build/blob/master/cmd/gopherbot/gopherbot.go).
+
+For more in-depth examples, take a look at the [tests](https://github.com/golang/build/blob/master/cmd/gopherbot/gopherbot_test.go).
+
+As always, patches are welcome!
+
+## Backporting issues
+
+TODO(filippo)