fix circleci 2.0 config (#139)

.circleci/config.yml

@@ -1,12 +1,13 @@
 version: 2
-
 jobs:
   build:
-    working_directory: /go/src/github.com/tendermint/go-crypto
     docker:
-    - image: circleci/golang:1.10.0
-      environment:
-        GOBIN: /tmp/workspace/bin
+      - image: circleci/golang:1.10.3
+        environment:
+          GOBIN: /tmp/workspace/bin
+
+    working_directory: /go/src/github.com/tendermint/go-crypto
+
     steps:
       - run: mkdir -p /tmp/workspace/bin
       - run: mkdir -p /tmp/workspace/profiles
@@ -17,9 +18,11 @@ jobs:
       - run:
               name: test
               command: |
+                export PATH="$GOBIN:$PATH"
+                go env
                 go version
-                cd $PROJECT_PATH && make get_tools && make all
-    - save_cache:
-        key: v1-dep-{{ .Branch }}
-        paths:
-        - /go/pkg
+                make get_tools && make all
+      - save_cache:
+          key: v1-dep-{{ .Branch }}
+          paths:
+            - /go/pkg