fix: build before e2e and run it on random port (#1377)

* chore: package-lock.json from Node 12
* fix: increase timeout for slow external test suiteI
* chore: support DEBUG output on travis
* fix: run e2e server on random port
* fix: ensure build run before e2e on CI
* chore: e2e shows used ipfs binary
* chore: ipfsd-ctl v1.0.6

Co-authored-by: Hugo Dias <mail@hugodias.me>

README.md

@@ -44,8 +44,8 @@ In separate shells run the following:
 ```
 
 ```sh
-# Run the unit tests
-> npm run test:unit
+# Run the unit tests in watch mode
+> npm run test:unit:watch
 ```
 
 ```sh