Update README and bump the version

README.md

@@ -54,6 +54,11 @@ $ git pull
 
 Install a specific version of driftctl.
 
+Available options:
+
+- `x.y.z` to install the exact version of driftctl
+- `latest` to install the latest version of driftctl
+
 ```console
 $ dctlenv install 0.2.3
 Installing driftctl v0.2.3
@@ -95,6 +100,11 @@ Installation of driftctl v0.4.0 successful. To make this your default version, r
 
 Switch a version to use.
 
+Available options:
+
+- `x.y.z` to install and use the exact version of driftctl
+- `latest` to install and use the latest version of driftctl
+
 ```console
 $ dctlenv use 0.2.3
 Switching version to v0.2.3

libexec/dctlenv-version

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -uo pipefail
 
-version="0.1.1"
+version="0.1.2"
 git_revision=""
 
 if cd "${BASH_SOURCE%/*}" 2>/dev/null && git remote -v 2>/dev/null | grep -q dctlenv; then