travis: disable windows, update import path config, and only run goveralls on linux (#115)

internal/runtests.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Copyright 2019 The Wire Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# https://coderwall.com/p/fkfaqq/safer-bash-scripts-with-set-euxo-pipefail
+set -euxo pipefail
+
+if [[ $# -gt 0 ]]; then
+  echo "usage: runtests.sh" 1>&2
+  exit 64
+fi
+
+result=0
+
+# Run Go tests. Only do coverage for the Linux build
+# because it is slow, and Coveralls will only save the last one anyway.
+if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
+  go test -race -coverpkg=./... -coverprofile=coverage.out ./... || result=1
+  if [ -f coverage.out ]; then
+    goveralls -coverprofile=coverage.out -service=travis-ci
+  fi
+else
+  go test -race ./... || result=1
+fi
+
+exit $result