Merge branch 'feature/func-args' into develop

* feature/func-args:
  Document the ability to pass any non-x (bool, array) value for some default function arguments.
  Allow the user to enter any value for some function argument defaults, rather than remember that eg 'false' must be used.

classes/casset.php

@@ -323,6 +323,10 @@ public static function css($sheet, $sheet_min = false, $group = 'global')
 	 */
 	private static function add_asset($type, $script, $script_min, $group)
 	{
+		// Don't force the user to remember that 'false' is used when not supplying
+		// a pre-minified file.
+		if (!is_string($script_min))
+			$script_min = false;
 		if (!array_key_exists($group, static::$groups[$type]))
 		{
 			// Assume they want the group enabled
@@ -379,6 +383,11 @@ private static function add_asset_inline($type, $content)
 	 */
 	public function render_js($group = false, $inline = false, $attr = array(), $min = null)
 	{
+		// Don't force the user to remember that false is used for ommitted non-bool arguments
+		if (!is_string($group))
+			$group = false;
+		if (!is_array($attr))
+			$attr = array();
 		if ($min === null)
 			$min = static::$min;
 
@@ -435,6 +444,11 @@ public function render_js($group = false, $inline = false, $attr = array(), $min
 	 */
 	public function render_css($group = false, $inline = false, $attr = array(), $min = null)
 	{
+		// Don't force the user to remember that false is used for ommitted non-bool arguments
+		if (!is_string($group))
+			$group = false;
+		if (!is_array($attr))
+			$attr = array();
 		if ($min === null)
 			$min = static::$min;
 

readme.md

@@ -128,6 +128,8 @@ Casset::js('myfile.js', 'myfile.min.js', 'group_name');
 Casset::css('myfile.css', false, 'group_name');
 ```
 
+(As an aside, you can pass any non-string value instead of 'false' in the second example, and Casset will behave the same: generate your minified file for you.)
+
 Groups can also be declared on the fly, by specifying a group name which doesn't yet exist. The group is assumed to be enabled.  
 You can also use a slightly more involved syntax for creating groups, which allows you to specify multiple files and whether the group is enabled, as shown below:
 
@@ -213,9 +215,11 @@ Similarly, you can choose to put comments inside each minified file, saying whic
 The following will minify the 'group_name' group, even if minification is turned off in the config file.
 
 ```php
-echo Casset::render_js('group_name', false, array(), true);
+echo Casset::render_js(false, false, array(), true);
 ```
 
+(Again, you can pass any non-string value for the first argument, and any non-array value for the third, and Casset will treat them the same as if the default argument (false and array() respectively) had been passed.)
+
 When minifying CSS files, urls are rewritten to take account of the fact that your css file has effectively moved into `public/assets/cache`.
 
 With JS files, changing the order in which files were added to the group will re-generate the cache file, with the files in their new positions. However with CSS, it will not.