update debug log in serveHTTP()

Add command line option: -b, -bind-ip. With this option, you can bind…

… one or more IP addresses to the ran web server.

update readme for v0.1.4

update to v0.1.3, add changelog (sync with dev:828d0b4)

add TLS encryption, add custom 401 file (sync with dev:b177b5b)

fix m3ng9i#4: unesacpe parent directory before getting it's modificat…

…ion time

first commit on master branch (sync with dev:42c3e7d)