Fixed installation notes
Many new changes:

    * Generated passphrase and duress key match ID in length and characters for
      100% plausible deniability. Now you can send the ID in an email without
      the URL, without revealing what it is or where it belongs.
    * Stylistic changes on displaying data on /post.
Merge branch 'master' of github.com:atoponce/d-note
Merge branch 'master' into hide-passhprase-use