Update Travis CI to use new test script and go 1.9.x

.travis.yml

@@ -5,17 +5,13 @@ os:
 language: go
 
 go:
-    - 1.8
+    - 1.9.x
 
-install: true
+install:
+  - make deps-protocol-muxing
 
-before_install:
-  - make deps
-  - go get -u github.com/multiformats/go-multicodec
-  - go get -u github.com/libp2p/go-msgio
-#- go vet ./...
 script:
-  - go test ./... -v
+  - bash <(curl -s https://raw.githubusercontent.com/ipfs/ci-helpers/master/travis-ci/run-standard-tests.sh)
 
 cache:
     directories:

codecov.yml

+coverage:
+  range: "50...100"
+comment: off