add gometalinter and goreleaser to travis, drop circleci

Former-commit-id: dc44ea15987447b0f179bb2011c000f6d7224898 [formerly 3192a7ad777c6ff93fdd0d62a1d9f4c466c5b06e] [formerly 5bb95d586cf0dbf48355142fe17dfa8d162923c5 [formerly de7a8cee605a531bb113a9bf0d87fc355b09ab50]]
Former-commit-id: 129d25ece6e5ad704f3ef98bc4a59db70d0c9e10 [formerly f51552b629dbd69810e51142c9a66ab708d96d39]
Former-commit-id: 39d64538f9edcb5933c5cff8904f86691bf75ed3

.circleci/config.yml

@@ -1,84 +0,0 @@
-version: 2
-jobs:
-  linting:
-    docker:
-      - image: circleci/golang:1.10
-    working_directory: /go/src/github.com/filebrowser/filebrowser
-    steps:
-      - checkout
-      - run:
-          name: Install Dependencies
-          command: |
-            curl -sL -o $GOPATH/bin/dep https://github.com/golang/dep/releases/download/v0.4.1/dep-linux-amd64
-            chmod +x $GOPATH/bin/dep
-            dep ensure -v
-            go get github.com/alecthomas/gometalinter
-            gometalinter --install
-      - run:
-          name: Run linting
-          command: |
-            gometalinter --exclude="rice-box.go" \
-              --deadline=300s \
-              -D goconst \
-              -D gocyclo \
-              -D vetshadow \
-              -D errcheck \
-              -D golint \
-              -D gas \
-              -D gosec
-  build:
-    docker:
-      - image: circleci/golang:1.10
-    working_directory: /go/src/github.com/filebrowser/filebrowser
-    steps:
-      - checkout
-      - run:
-          name: Install Dependencies
-          command: |
-            curl -sL -o $GOPATH/bin/dep https://github.com/golang/dep/releases/download/v0.4.1/dep-linux-amd64
-            chmod +x $GOPATH/bin/dep
-            dep ensure -v
-      - run:
-          name: Building
-          command: go build github.com/filebrowser/filebrowser/cmd/filebrowser
-  deploy:
-    docker:
-      - image: circleci/golang:1.10
-    working_directory: /go/src/github.com/filebrowser/filebrowser
-    steps:
-      - checkout
-      - run:
-          name: Install Dependencies
-          command: |
-            curl -sL -o $GOPATH/bin/dep https://github.com/golang/dep/releases/download/v0.4.1/dep-linux-amd64
-            chmod +x $GOPATH/bin/dep
-            dep ensure -v
-      - run:
-          name: Deploy
-          command: curl -sL https://git.io/goreleaser | bash
-
-workflows:
-  version: 2
-  lint-build-deploy:
-    jobs:
-      - linting:
-          filters:
-              tags:
-                only: /.*/
-              branches:
-                only: /.*/
-      - build:
-          filters:
-              tags:
-                only: /.*/
-              branches:
-                only: /.*/
-      - deploy:
-          requires:
-            - linting
-            - build
-          filters:
-            tags:
-              only: /v[0-9]+(\.[0-9]+)*(-.*)*/
-            branches:
-              ignore: /.*/