fix: package.json & .snyk to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/npm:debug:20170905

Latest report for mifi/lossless-cut:
https://snyk.io/test/github/mifi/lossless-cut

.snyk

@@ -0,0 +1,8 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.7.1
+ignore: {}
+# patches apply the minimum changes required to fix a vulnerability
+patch:
+  'npm:debug:20170905':
+    - electron > extract-zip > debug:
+        patched: '2017-09-30T01:58:04.584Z'

package.json

@@ -23,7 +23,9 @@
     "gifify": "gifify -p 405:299 -r 5@3 Untitled.mov-00.00.00.971-00.00.19.780.mp4",
     "lint": "eslint --ext .jsx --ext .js .",
     "clean": "rm -rf dist ffmpeg-tmp/extracted ffmpeg-tmp/binaries package",
-    "clean-ffmpeg": "rm -rf ffmpeg-tmp/archives"
+    "clean-ffmpeg": "rm -rf ffmpeg-tmp/archives",
+    "snyk-protect": "snyk protect",
+    "prepublish": "npm run snyk-protect"
   },
   "author": {
     "name": "Mikael Finstad",
@@ -66,6 +68,8 @@
     "react-hammerjs": "^0.5.0",
     "read-chunk": "^2.0.0",
     "strong-data-uri": "^1.0.4",
-    "which": "^1.2.11"
-  }
+    "which": "^1.2.11",
+    "snyk": "^1.41.1"
+  },
+  "snyk": true
 }