Add runtime informations

 * GoVersion
 * GoOs
 * GoArch
Add newline-mode for response

This is a workaround for curl on cmdline-terminal.
When a response is not terminated with newline,
it is possible for a response not to output to cmdline-terminal.
Merge pull request #2 from cubicdaiya/feature/add_runtime_info

Add runtime informations
Merge pull request #3 from cubicdaiya/feature/add_newline_response

Add newline-mode for response