Update README

README.md

@@ -128,7 +128,7 @@ Type: `boolean`
 
 Default: `true`
 
-Use the `/tmp/<workflow bundle id>` directory for your workflow cache when `true`. When `false` it will use the path in the `alfred_workflow_cache` environment variable as cache directory, which is set by Alfred by default. You can override this environment variable if you like to set a custom cache directory.
+Use the OS temp directory for your workflow cache when `true`, otherwise use the directory set by Alfred in  the`alfred_workflow_cache` environment variable. It's recommended to leave this set at `true` unless you want your cache to survive reboots and clean it up yourself every once in a while.
 
 ### Properties
 
@@ -138,10 +138,13 @@ Type: `Object`
 
 Collection of Alfred metadata that is available to the script through environment variables. See the alfred documentation for more info: https://www.alfredapp.com/help/workflows/script-environment-variables/.
 
+When you use a custom Alfred theme, the `themeFile` property will be set to the path of the theme file (which is a JSON file). Also see [Hugo.alfredTheme](#hugo.alfredtheme).
+
 ```javascript
 {
     version: process.env.alfred_version,
     theme: process.env.alfred_theme,
+    themeFile: '',
     themeBackground: process.env.alfred_theme_background,
     themeSelectionBackground: process.env.alfred_theme_selection_background,
     themeSubtext: parseFloat(process.env.alfred_theme_subtext),
@@ -152,6 +155,12 @@ Collection of Alfred metadata that is available to the script through environmen
 ```
 *Also see: [Hugo.workflowMeta](#hugo.workflowmeta)*
 
+#### Hugo.alfredTheme
+
+Type: `Object`
+
+When a custom Alfred theme is used, this will return the contents of the theme file. Usefull if you need to render icons on-the-fly and want to know the background colour.
+
 #### Hugo.cache
 
 Type: [`cache-conf `](https://github.com/samverschueren/cache-conf)
@@ -316,6 +325,12 @@ Check out [file-cache.js.flow](file-cache.js.flow) and the [example](examples/fi
 
 Checks for workflow package updates on either NPM or Packal when enabled. No need to call this method manually, updates will be checked automagically ​:sparkles:​
 
+#### Hugo.clearCache()
+
+Empties the workflow cache directory but doesn't remove the directory itself.
+
+Call `Hugo.clearCacheSync()` if you need it synchronously.
+
 #### Hugo.filterItems(query, options)
 
 Fuzzy filter the output buffer by search query using Fuse.js. Add items to the output buffer first and then call `filterItems` to remove the items that do not match the search query. This method alters the output buffer directly.