Add `gofmt -s` to CircleCI

.circleci/config.yml

@@ -91,7 +91,7 @@ jobs:
       - run: 'go get -u github.com/opennota/check/cmd/varcheck'
       - run:
           name: run linters
-          command: 'gometalinter --enable-gc --vendor --deadline 10m --disable-all --enable=deadcode --enable=goconst --enable=ineffassign --enable=megacheck --enable=structcheck --enable=unconvert --enable=varcheck ./...'
+          command: 'gometalinter --enable-gc --vendor --deadline 10m --disable-all --enable=deadcode --enable=goconst --enable=gofmt --enable=ineffassign --enable=megacheck --enable=structcheck --enable=unconvert --enable=varcheck ./...'
       - run:
           name: run go vet
           command: 'go vet ./pkg/...'