Rename all "Term" to less used "Termin"

The name *Term* is often use like as model name in projects. 

I've send pull request to gem "term-ansicolor" https://github.com/flori/term-ansicolor/pull/23, but it's not merged yet. I've create my own gem "termin-ansicolor" and pushed it Rubygems. It differs from *term-ansicolor* main module name only (see changed files at pull request). So just my pull request in term-ansicolor is merged, I'll change dependency gem in tconsole from *termin-ansicolor* to *term-ansicolor".

I've decided to change module name from Term to Termin, because the second word is less used (see search results on Github Ruby, for example).