Remove Parser options usage

Summary: Now, have katex catch and print exceptions instead of the
parser

Auditors: alpert

Parser.js

@@ -1,8 +1,7 @@
 var Lexer = require("./Lexer");
 
 // Main Parser class
-function Parser(options) {
+function Parser() {
-    this.options = options;
 };
 
 // Returned by the Parser.parse... functions. Stores the current results and

katex.js

@@ -130,15 +130,16 @@ var clearNode = function(node) {
 };
 
 var process = function(toParse, baseElem) {
+    try {
         var tree = parseTree(toParse);
-    if (tree) {
         clearNode(baseElem);
         var expression = buildExpression(tree);
         for (var i = 0; i < expression.length; i++) {
             baseElem.appendChild(expression[i]);
         }
         return true;
-    } else {
+    } catch (e) {
+        console.error(e);
         return false;
     }
 };

parseTree.js

@@ -1,5 +1,5 @@
 var Parser = require("./Parser");
-var parser = new Parser({verbose: true});
+var parser = new Parser();
 
 var parseTree = function(toParse) {
     return parser.parse(toParse);