Merge pull request #32 from timcosta/marked_0.7.0

Update Marked to 0.7.0 to resolve npm audit issue

package.json

@@ -41,7 +41,7 @@
     "bin-v8-flags-filter": ">=1.2.0 <2",
     "glob": "7.x.x",
     "json-stable-stringify": "1.x.x",
-    "marked": "0.6.x",
+    "marked": "0.7.x",
     "marked-terminal": "3.x.x",
     "mkdirp": "0.5.x",
     "pkg-dir": "4.x.x",