Add env module

hammerspoon/env.lua

@@ -0,0 +1,17 @@
+local obj = {
+  hostname = nil
+}
+
+function obj:init()
+  self.hostname = self.getHostname()
+end
+
+function obj:getHostname()
+  local f = io.popen ("hostname")
+  local hostname = f:read("*a") or ""
+  f:close()
+  hostname = string.gsub(hostname, "\n$", "")
+  return hostname
+end
+
+return obj