bump version to 0.1.1
changelogs(2014-4-13):
* add a fake function: tls_get_peer_cert
* tls_handle_bio_error and tls_handle_ssl_error added for a common usage
* fix a high cpu bug in uv lines
* make SSL_MODE_RELEASE_BUFFERS be gracefully imported
* correct conn_cb and read_cb for ssl
* fix a memory leak in ssl part
add CHANGELOGS