Allow decimal number values

Fixes #472

lib/handlebars/compiler/ast.js

@@ -201,12 +201,12 @@ var AST = {
       this.stringModeValue = string;
   },
 
-  IntegerNode: function(integer, locInfo) {
+  NumberNode: function(number, locInfo) {
     LocationInfo.call(this, locInfo);
-    this.type = "INTEGER";
+    this.type = "NUMBER";
     this.original =
-      this.integer = integer;
-    this.stringModeValue = Number(integer);
+      this.number = number;
+    this.stringModeValue = Number(number);
   },
 
   BooleanNode: function(bool, locInfo) {

lib/handlebars/compiler/compiler.js

@@ -321,8 +321,8 @@ Compiler.prototype = {
     this.opcode('pushString', string.string);
   },
 
-  INTEGER: function(integer) {
-    this.opcode('pushLiteral', integer.integer);
+  NUMBER: function(number) {
+    this.opcode('pushLiteral', number.number);
   },
 
   BOOLEAN: function(bool) {

lib/handlebars/compiler/printer.js

@@ -108,8 +108,8 @@ PrintVisitor.prototype.STRING = function(string) {
   return '"' + string.string + '"';
 };
 
-PrintVisitor.prototype.INTEGER = function(integer) {
-  return "INTEGER{" + integer.integer + "}";
+PrintVisitor.prototype.NUMBER = function(number) {
+  return "NUMBER{" + number.number + "}";
 };
 
 PrintVisitor.prototype.BOOLEAN = function(bool) {