Add codecov.io

Split runs into lint/test
Remove go 1.9 - coverage does not work with `./...` and go 1.9

.gitignore

@@ -9,3 +9,4 @@ signing_key*
 http.log
 .idea
 .DS_Store
+coverage.txt

.travis.yml

@@ -3,12 +3,12 @@ services:
   - mysql
 
 env:
-  - MYSQL_TEST="true"
+  - SUITE=lint
+  - SUITE=test
 
 go:
   - 1.11.x
   - 1.10.x
-  - 1.9.x
   - tip
 
 matrix:
@@ -25,4 +25,7 @@ install:
 
 sudo: false
 script:
-  - make test
+  - MYSQL_TEST="true" make $SUITE
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

Makefile

@@ -10,9 +10,11 @@ CGO_ENABLED ?= $(shell go env CGO_ENABLED)
 
 all: test build
 
-test: dep
-	go test ./...
+test:
+	go test -coverprofile=coverage.txt -covermode=count ./...
 	go install -race $(CASHIER_CMD) $(CASHIERD_CMD)
+
+lint: dep
 	go vet ./...
 	go list ./... |xargs -L1 golint -set_exit_status
 	gofmt -s -d -l -e $(SRC_FILES)
@@ -39,7 +41,6 @@ migration:
 
 dep:
 	go get -u golang.org/x/lint/golint
-	go get -u golang.org/x/tools/cmd/goimports
 
 version:
 	@echo $(VERSION)

README.md

@@ -76,10 +76,10 @@ docker run -it --rm -p 10000:10000 --name cashier -v ${PWD}:/cashier nsheridan/c
 
 # Requirements
 ## Server
-Go 1.9 or 1.10, though it may work with earlier versions.
+Go 1.10 or 1.11, though it may work with earlier versions.
 
 ## Client
-- Go 1.9 or 1.10 or later, though it may work with earlier versions.
+- Go 1.10 or 1.11 or later, though it may work with earlier versions.
 - OpenSSH 5.6 or newer.
 - A working SSH agent (note that the GPG agent does not handle certificates)