move md5 package to main dependencies since it is used in the main package scope

package-lock.json

@@ -257,8 +257,7 @@
     "charenc": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/charenc/-/charenc-0.0.2.tgz",
-      "integrity": "sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc=",
-      "dev": true
+      "integrity": "sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc="
     },
     "circular-json": {
       "version": "0.3.3",
@@ -396,8 +395,7 @@
     "crypt": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/crypt/-/crypt-0.0.2.tgz",
-      "integrity": "sha1-iNf/fsDfuG9xPch7u0LQRNPmxBs=",
-      "dev": true
+      "integrity": "sha1-iNf/fsDfuG9xPch7u0LQRNPmxBs="
     },
     "dashdash": {
       "version": "1.14.1",
@@ -1177,8 +1175,7 @@
     "is-buffer": {
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
-      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==",
-      "dev": true
+      "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
     },
     "is-fullwidth-code-point": {
       "version": "2.0.0",
@@ -1365,7 +1362,6 @@
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/md5/-/md5-2.2.1.tgz",
       "integrity": "sha1-U6s41f48iJG6RlMp6iP6wFQBJvk=",
-      "dev": true,
       "requires": {
         "charenc": "~0.0.1",
         "crypt": "~0.0.1",

package.json

@@ -10,7 +10,8 @@
     "coveralls": "cat ./coverage/lcov.info | coveralls"
   },
   "dependencies": {
-    "busboy": "^0.3.1"
+    "busboy": "^0.3.1",
+    "md5": "^2.2.1"
   },
   "engines": {
     "node": ">=6.0.0"
@@ -28,7 +29,6 @@
   "license": "MIT",
   "repository": "richardgirges/express-fileupload",
   "devDependencies": {
-    "md5": "^2.2.1",
     "body-parser": "^1.18.3",
     "coveralls": "^3.0.2",
     "eslint": "^5.9.0",