Fix circleci job (#82)

* Update README to reflect 1.19

* Fix circleci image

* Fix circleci

* Fix working directory

Author: yolken

.circleci/config.yml

@@ -1,9 +1,8 @@
 version: 2
 jobs:
   test:
-    working_directory: /go/src/github.com/segmentio/golines
     docker:
-      - image: circleci/golang:1.19
+      - image: cimg/go:1.19
         environment:
           GO111MODULE: 'on'
     steps: