update packages

switch from yarn to npm

package.json

@@ -38,7 +38,7 @@
     "@koa/cors": "^2.2.1",
     "app-root-path": "^2.0.1",
     "babel-polyfill": "^6.5.0",
-    "bitcoin-promise": "filipnyquist/node-bitcoin-promise#1fbf1cb8913ca3542b66060d48ebea185661e0a7",
+    "bitcoin-promise": "filipnyquist/node-bitcoin-promise",
     "bluebird": "^3.5.0",
     "chalk": "^2.0.1",
     "crypto": "^1.0.1",
@@ -57,11 +57,11 @@
     "koa-router": "^7.0.0",
     "limited-request-queue": "^3.0.4",
     "node-slack": "^0.0.7",
-    "oas": "^0.8.8",
+    "oas": "^0.8.15",
     "ora": "^1.3.0",
     "prettysize": "^1.1.0",
     "properties-reader": "^0.0.16",
-    "redoc-cli": "^0.6.4",
+    "redoc-cli": "^0.8.5",
     "request": "^2.81.0",
     "request-promise": "^4.2.1",
     "winston": "^2.3.1",
@@ -69,7 +69,7 @@
     "winston-stream": "^0.0.0"
   },
   "devDependencies": {
-    "apidoc": "^0.17.6",
+    "apidoc": "^0.17.7",
     "babel-cli": "^6.5.1",
     "babel-eslint": "^7.1.1",
     "babel-plugin-add-module-exports": "^0.2.1",