Merge pull request #69 from thelounge/themes

Add themes docs

_docs/plugins/themes.md

@@ -0,0 +1,64 @@
+---
+layout: documentation
+title: Themes
+category: Plugins
+order: 5.1
+---
+
+# Finding Themes
+
+Themes published on npm should have the keyword `thelounge-theme`, so you can
+find a list by
+[searching on npmjs.org](https://www.npmjs.com/search?q=keywords%3Athelounge-theme).
+
+# Installing Themes
+
+To install theme `thelounge-theme-custom`:
+
+* `lounge install thelounge-theme-custom`
+* Restart The Lounge
+* Select theme in options
+
+# Creating Themes
+
+Create an npm package using the base `package.json` below, and publish to npm:
+
+```
+{
+  "name": "thelounge-theme-custom", // Replace 'custom' with your theme name
+  "version": "1.0.0",
+  "description": "A theme for The Lounge",
+  "main": "package.json",
+  "thelounge": {
+    "css": "theme.css", // Set to the theme css file
+    "name": "Theme Name", // The display name
+    "type": "theme"
+  },
+  "license": "MIT",
+  "homepage": "https://github.com/username/thelounge-theme-custom", // Set to your homepage
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/username/thelounge-theme-custom.git" // Set your git repository
+  },
+  "keywords": [
+    "thelounge",
+    "thelounge-theme"
+  ],
+  "bugs": {
+    "url": "https://github.com/username/thelounge-theme-custom/issues" // Set to a page for people to file issues
+  }
+}
+```
+
+Alternatively, you can have your `main` file as a JS file, and export a
+`thelounge` object on it, containing the same information as above. For example:
+
+```
+module.exports = {
+  thelounge: {
+    "css": "theme.css", // Set to the theme css file
+    "name": "Theme Name", // The display name
+    "type": "theme"
+  }
+}
+```