Add goreleaser config and update gitignore and readme

.gitignore

@@ -1,3 +1,4 @@
 .DS_Store
 bin/
 tmp/
+dist/

.goreleaser.yml

@@ -0,0 +1,31 @@
+# Goreleaser config file for bamstats
+before:
+  hooks:
+    - go mod tidy
+builds:
+- env:
+  - CGO_ENABLED=0
+  main: ./cmd/bamstats/main.go
+  ldflags: -s -w -X main.version={{ .Version }} -X main.commit={{ .ShortCommit }} -X main.date={{ .Date }}
+archives:
+- name_template: '{{ .ProjectName }}-{{ if ne .Version "dev" }}v{{ end }}{{ .Version }}-{{ .Os }}-{{ .Arch }}'
+  replacements:
+    386: i386
+    amd64: x86_64
+checksum:
+  name_template: '{{ .ProjectName }}_checksums.txt'
+snapshot:
+  name_template: "dev"
+changelog:
+  sort: desc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'
+    - 'goreleaser'
+    - '^Bump'
+release:
+  github:
+    owner: guigolab
+    name: bamstats
+  name_template: "Version {{.Version}}"

README.md

@@ -14,8 +14,8 @@ Use one of the following methods to install `Bamstats`.
 The easiest way is to download a pre-compiled binary from Github [releases](https://github.com/guigolab/bamstats/releases). Here is an example for installing the latest released version on Linux 64bit:
 
 ```
-export VERSION=0.3.2 OS=linux ARCH=amd64 BIN=/usr/local/bin
-wget -O - https://github.com/guigolab/bamstats/releases/download/v${VERSION}/bamstats-v${VERSION}-${OS}-${ARCH}.tar.bz2 | tar xj --strip-components 3 -C ${BIN}
+export VERSION=0.3.5 OS=linux ARCH=x86_64 BIN=/usr/local/bin
+wget -O - https://github.com/guigolab/bamstats/releases/download/v${VERSION}/bamstats-v${VERSION}-${OS}-${ARCH}.tar.gz | tar xz -C ${BIN} bamstats
 ```
 
 ### Install the latest version with go