info diagram to show version of mermaid, bugfixes for gantt chart

src/diagrams/info/info.spec.js

@@ -0,0 +1,15 @@
+/* eslint-env jasmine */
+describe('when parsing an info graph it', function () {
+  var ex
+  beforeEach(function () {
+    ex = require('./parser/info').parser
+    ex.yy = require('./infoDb')
+  })
+
+  it('should handle an info definition', function () {
+    var str = `info
+    showInfo`
+
+    ex.parse(str)
+  })
+})