make: introduce first make commands for formatting and lint

Makefile

+# TARGET = eris-db
+# IMAGE = quay.io/eris/db
+
+SHELL := /bin/bash
+GOFILES_NOVENDOR := $(shell find . -type f -name '*.go' -not -path "./vendor/*")
+PACKAGES_NOVENDOR := $(shell go list github.com/eris-ltd/eris-db/... | grep -v /vendor/)
+VERSION_MIN := $(shell cat ./version/version.go | tail -n 1 | cut -d \  -f 4 | tr -d '"')
+VERSION_MAJ := $(shell echo ${VERSION_MIN} | cut -d . -f 1-2)
+
+.PHONY: greet
+greet:
+	@echo "Hi! I'm the marmot that will help you with eris-db v${VERSION_MIN}"
+
+### Formatting, linting and vetting
+
+# check the code for style standards; currently enforces go formatting.
+# display output first, then check for success	
+.PHONY: check
+check:
+	@echo "Checking code for formatting style compliance."
+	@gofmt -l -d ${GOFILES_NOVENDOR}
+	@gofmt -l ${GOFILES_NOVENDOR} | read && echo && echo "Your marmot has found a problem with the formatting style of the code." 1>&2 && exit 1 || true
+
+# fmt runs gofmt -w on the code, modifying any files that do not match
+# the style guide.
+.PHONY: fmt
+fmt:
+	@echo "Correcting any formatting style corrections."
+	@gofmt -l -w ${GOFILES_NOVENDOR}
+
+# lint installs golint and prints recommendations for coding style.
+lint: 
+	@echo "Running lint checks."
+	go get -u github.com/golang/lint/golint
+	@for file in $(GOFILES_NOVENDOR); do \
+		echo; \
+		golint --set_exit_status $${file}; \
+	done
+
+# vet runs extended compilation checks to find recommendations for
+# suspicious code constructs.
+.PHONY: vet
+vet:
+	@echo "Running go vet."
+	@go vet ${PACKAGES_NOVENDOR}
\ No newline at end of file

client/client.go

@@ -80,7 +80,7 @@ func NewErisNodeClient(rpcString string) *ErisNodeClient {
 // it needs to be initialised before go-rpc, hence it's placement here.
 func init() {
 	h := tendermint_log.LvlFilterHandler(tendermint_log.LvlWarn, tendermint_log.StdoutHandler)
-    tendermint_log.Root().SetHandler(h)
+	tendermint_log.Root().SetHandler(h)
 }
 
 //------------------------------------------------------------------------------------