Replace deprecated get with install command

See https://golang.org/doc/go-get-install-deprecation

Author: Felixoid

Makefile

@@ -42,18 +42,18 @@ install-dependencies:
 
 install-tools:
 	# generation
-	go get golang.org/x/tools/cmd/stringer
+	go install golang.org/x/tools/cmd/stringer
 
 	# linting
-	go get golang.org/x/lint/golint/...
-	go get github.com/kisielk/errcheck/...
-	go get honnef.co/go/tools/...
+	go install golang.org/x/lint/golint/...
+	go install github.com/kisielk/errcheck/...
+	go install honnef.co/go/tools/...
 
 	# code coverage
-	go get golang.org/x/tools/cmd/cover
-	go get github.com/onsi/ginkgo/ginkgo/...
-	go get github.com/modocache/gover/...
-	go get github.com/mattn/goveralls/...
+	go install golang.org/x/tools/cmd/cover
+	go install github.com/onsi/ginkgo/ginkgo/...
+	go install github.com/modocache/gover/...
+	go install github.com/mattn/goveralls/...
 .PHONY: install-tools
 
 lint:

README.md

@@ -67,7 +67,7 @@ Mutation testing is also especially interesting for comparing automatically gene
 go-mutesting includes a binary which is go-getable.
 
 ```bash
-go get -t -v github.com/zimmski/go-mutesting/...
+go install github.com/zimmski/go-mutesting/cmd/go-mutesting@latest
 ```
 
 The binary's help can be invoked by executing the binary without arguments or with the `--help` argument.