Add beginning of support for <script type="text/paperscript">, inspired by Coffee Script.

src/util/PaperScript.js

@@ -0,0 +1,54 @@
+var PaperScript = new function() {
+	function compile(code) {
+		return code;
+	}
+
+	function run(code) {
+		with (paper) {
+			return eval(compile(code));
+		}
+	}
+
+//#ifdef BROWSER
+	// Code borrowed from Coffee Script:
+	function load(url) {
+		var xhr = new (window.ActiveXObject || XMLHttpRequest)('Microsoft.XMLHTTP');
+		xhr.open('GET', url, true);
+		if ('overrideMimeType' in xhr) {
+			xhr.overrideMimeType('text/plain');
+		}
+		xhr.onreadystatechange = function() {
+			if (xhr.readyState === 4) {
+				return run(xhr.responseText);
+			}
+		};
+		return xhr.send(null);
+	}
+
+	function runScripts() {
+		var scripts = document.getElementsByTagName('script');
+		for (var i = 0, l = scripts.length; i < l; i++) {
+			var script = scripts[i];
+			if (script.type === 'text/paperscript') {
+				if (script.src) {
+					load(script.src);
+				} else {
+					run(script.innerHTML);
+				}
+			}
+		}
+		return null;
+	}
+
+	if (window.addEventListener) {
+		addEventListener('DOMContentLoaded', runScripts, false);
+	} else {
+		attachEvent('onload', runScripts);
+	}
+//#endif // BROWSER
+
+	return {
+		compile: compile,
+		run: run
+	};
+};