Update README.md (minor copy edits)

[jcubic]

• Please modify php.in file, the only difference are {{ }} tags are in in files.
• Please use indent:
  • in meta tags if you use one tag in two lines align second attribute to first one.
  • text in first p tag have no indent, text should have two spaces after the first < or like your later edit aligned with > of the opening tag.

    <p>
      jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications.
      ...
    </p>

or

    <p>
       jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications.
       ...
    </p>