unshallow checkout to always have access to the latest tag during release

.github/workflows/go.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
 
     - name: Set up Go
       uses: actions/setup-go@v2

README.md

@@ -0,0 +1,13 @@
+# mullvad-best-server
+Determines the mullvat.net server with the lowest latency. 
+
+## Installation
+
+Download binary from releases for your platform and unpack.
+
+## Usage
+Execute `mullvad-best-server`. It outputs the code, e.g. `de05`. You can then connect to it with e.g. wireguard using the normal shell scripts.
+
+## Background
+The program uses `https://api.mullvad.net/www/relays/wireguard/` to get the current server list, pings the ones with the right country
+and outputs the server with the lowest ping.