Fix README and add goreleaser config

Author: Felix Breidenstein

.gitignore

@@ -1,2 +1,3 @@
 alertmanager-fe2-bridge
 config.yaml
+dist/

.goreleaser.yml

@@ -0,0 +1,26 @@
+before:
+  hooks:
+    - go mod download
+
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    goarch:
+      - amd64
+
+archives:
+  - replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      amd64: x86_64
+
+checksum:
+  name_template: 'checksums.txt'
+
+changelog:
+  sort: asc

README.md

@@ -1,10 +1,18 @@
 # alertmanager-fe2-bridge
 
-A little gateway which receives alerts from the Prometheus Alertmanager via the (webhook
-receiver)[https://prometheus.io/docs/alerting/latest/configuration/#webhook_config] and sends them to the HTTP
-interface of your (Alamos FE2)[https://www.alamos-gmbh.com/service/fe2/] installation.
+A little gateway which receives alerts from the Prometheus Alertmanager via
+the [webhook
+receiver](https://prometheus.io/docs/alerting/latest/configuration/#webhook_config)
+and sends them to the HTTP interface of your [Alamos
+FE2](https://www.alamos-gmbh.com/service/fe2/) installation.
 
 ## Installation
+Install manually from source:
+```
+go get github.com/codemonauts/alertmanager-fe2-bridge
+```
+or get the latest compiled binary from the 
+[Releases](https://github.com/codemonauts/alertmanager-fe2-bridge/releases) page on GitHub.
 
 ## Alertmanager configuration
 ```