Move from HTTP::Tiny and threads to AnyEvent:HTTP

* Use AnyEvent::HTTP instead of HTTP::Tiny to decrease resource usage
* Remove threads and threads::shared
* Update --help
* Update README.md
* Update TODO
* Add .gitignore
* Add cpanfile with list of required files
* Add bootstrap.sh to easily prepare run environment

bootstrap.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+cpanm -L vendor_perl --force --installdeps .
+
+# vim: set ft=sh noet ai ts=4 sw=4 sts=4: