.travis.yml: run Coveralls, as Drone is gone

.travis.yml

@@ -1,8 +1,14 @@
 language: go
 
-script: go test -race -v ./...
+before_install:
+  - go get github.com/mattn/goveralls
+  - go get github.com/modocache/gover
+
+script:
+  - go test -race -v ./...
+  - ./coveralls.bash
 
 go:
-    - 1.7.x
-    - 1.8.x
-    - tip
+  - 1.7.x
+  - 1.8.x
+  - tip

coveralls.bash

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+if ! type -P gover
+then
+	echo gover missing: go get github.com/modocache/gover
+	exit 1
+fi
+
+if ! type -P goveralls
+then
+	echo goveralls missing: go get github.com/mattn/goveralls
+	exit 1
+fi
+
+if [[ "$COVERALLS_TOKEN" == "" ]]
+then
+	echo COVERALLS_TOKEN not set
+	exit 1
+fi
+
+go list ./... | grep -v '/examples/' | cut -d'/' -f 4- | while read d
+do
+	cd $d
+	go test -covermode count -coverprofile coverage.coverprofile
+	cd -
+done
+
+gover
+goveralls -coverprofile gover.coverprofile -service travis-ci -repotoken $COVERALLS_TOKEN
+find . -name '*.coverprofile' -delete
+