Added docs for --template (#193)

* Added docs for --template

* refactor: Remove empty defaults & fix indent in indent

Author: framp

README.md

@@ -50,42 +50,44 @@ npm run build
 ```sh
 $ preact create
 
-  --name      directory and package name for the new app
-  --dest      Directory to create the app within                  [default: <name>]
-  --type      A project template to start from
+  --name      directory and package name for the new app.
+  --dest      Directory to create the app within.                 [default: <name>]
+  --type      A project template to start from.
               [Options: "default", "root", "simple", "empty"]     [default: "default"]
-  --less      Pre-install LESS support                 [boolean]  [default: false]
-  --sass      Pre-install SASS/SCSS support            [boolean]  [default: false]
-  --git       Initialize version control using git     [boolean]  [default: true]
+  --less      Pre-install LESS support.                [boolean]  [default: false]
+  --sass      Pre-install SASS/SCSS support.           [boolean]  [default: false]
+  --git       Initialize version control using git.    [boolean]  [default: true]
 
 $ preact build
 
-  --src             Entry file (index.js)                         [default: "src"]
-  --dest            Directory root for output                     [default: "build"]
+  --src             Entry file (index.js).                        [default: "src"]
+  --dest            Directory root for output.                    [default: "build"]
   --production, -p  Create a minified production build.           [default: true]
-  --less, -l        Build and compile LESS files                  [default: false]
-  --sass, -s        Build and compile SASS files                  [default: false]
+  --less, -l        Build and compile LESS files.                 [default: false]
+  --sass, -s        Build and compile SASS files.                 [default: false]
   --prerender       Pre-render static app content.                [default: true]
+  --template        Path to template file.
   --clean           Clear output directory before building.       [default: true]
   --json            Generate build statistics for analysis.       [default: false]
   --config, -c      Path to custom CLI config.
 
 $ preact watch
 
-  --src        Entry file (index.js)                              [default: "src"]
-  --port, -p   Port to start a server on                          [default: "8080"]
+  --src        Entry file (index.js).                             [default: "src"]
+  --port, -p   Port to start a server on.                         [default: "8080"]
   --host                                              [boolean]   [default: "0.0.0.0"]
-  --prerender  Pre-render static app content on initial build     [default: false]
+  --prerender  Pre-render static app content on initial build.    [default: false]
+  --template   Path to template file.
 
 $ preact serve
 
   --dir       Directory root to serve static files from.          [default: "build"]
   --cwd       The working directory in which to spawn a server.   [default: .]
   --server    Which server to run, or "config" to produce a firebase config.        
           [options: "simplehttp2server", "superstatic", "config"] [default:"simplehttp2server"]
-  --dest      Directory or filename where firebase.json should be written
+  --dest      Directory or filename where firebase.json should be written.
               (used for --server config)                          [default: -]
-  --port, -p  Port to start a server on                           [default: "8080"]
+  --port, -p  Port to start a server on.                          [default: "8080"]
 
 ```
 
@@ -142,6 +144,18 @@ export default function (config, env, helpers) {
 ```
 See [WebpackConfigHelpers] docs for more info on ```helpers``` argument.
 
+#### Template
+A template is used to render your page.
+
+The default one is visible [here](src/resources/template.html) and it's going to be enough for the majority of cases.
+
+If you want to customise your template you can pass a custom template with the `--template` flag.
+
+The `--template` flag is available on the `build` and `watch` commands.
+```
+preact build --template src/template.html
+preact watch --template src/template.html
+```
 
 [preact]: https://github.com/developit/preact
 [preact-router]: https://github.com/developit/preact-router