chore(deps): install egg-bin, mm as devDeps not deps (#1366)

Author: edvardchen

package.json

@@ -31,7 +31,6 @@
     "delegates": "^1.0.0",
     "depd": "^1.1.2",
     "destroy": "^1.0.4",
-    "egg-bin": "^4.13.0",
     "error-inject": "^1.0.0",
     "escape-html": "^1.0.3",
     "fresh": "~0.5.2",
@@ -41,7 +40,6 @@
     "koa-compose": "^4.1.0",
     "koa-convert": "^1.2.0",
     "koa-is-json": "^1.0.0",
-    "mm": "^2.5.0",
     "on-finished": "^2.3.0",
     "only": "~0.0.2",
     "parseurl": "^1.3.2",
@@ -50,11 +48,13 @@
     "vary": "^1.1.2"
   },
   "devDependencies": {
+    "egg-bin": "^4.13.0",
     "eslint": "^6.0.1",
     "eslint-config-koa": "^2.0.0",
     "eslint-config-standard": "^7.0.1",
     "eslint-plugin-promise": "^3.5.0",
     "eslint-plugin-standard": "^2.1.1",
+    "mm": "^2.5.0",
     "supertest": "^3.1.0"
   },
   "engines": {