index_html needed a relative ../defaults

lib/index_html.js

@@ -18,7 +18,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 const defaults = require("./defaults.js");
 var fs = require("fs");
 var ejs = require("ejs");
-context = require("./defaults/context.json");
+context = require("../defaults/context.json");
 const path = require("path");
 const shell = require("shelljs");
 const jsonld = require("jsonld");