Adding support for ishViewportRange (#131)

* Adding support for ishViewportRange

* adding ishViewportRang default settings

Author: EvanLovely

config/config.yml.default

@@ -43,3 +43,9 @@ defaultPattern: "all"
 
 # show pattern info by default on the "view all" views
 defaultShowPatternInfo: false
+
+# Set a range of viewport widths for S, M, & L buttons
+ishViewportRange:
+  s: [320, 500]
+  m: [500, 800]
+  l: [800, 1200]

src/PatternLab/Config.php

@@ -245,6 +245,7 @@ public static function init($baseDir = "", $verbose = true) {
 		self::setExposedOption("ishFontSize");
 		self::setExposedOption("ishMaximum");
 		self::setExposedOption("ishMinimum");
+		self::setExposedOption("ishViewportRange");
 		self::setExposedOption("outputFileSuffixes");
 		self::setExposedOption("plugins");