Update to latest html2canvas

Author: eKoopmans

package-lock.json

@@ -27,9 +27,9 @@
   },
   "homepage": "https://github.com/eKoopmans/html2pdf",
   "dependencies": {
-    "html2canvas": "https://github.com/eKoopmans/html2canvas/tarball/develop",
-    "jspdf": "^1.3.5",
-    "es6-promise": "^4.1.1"
+    "es6-promise": "^4.1.1",
+    "html2canvas": "^1.0.0-alpha.12",
+    "jspdf": "^1.3.5"
   },
   "devDependencies": {
     "babel-core": "^6.26.0",