Restructure directory, add 'pkgs' folder now

pkgs/signify/libsignify/README

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+This is a self-contained port of OpenBSD's signify to Linux and other
+Unixes.
+
+Like on OpenBSD, this version of signify uses the Ed25519 primitive for
+signing/verification, ChaCha for random number generation, and a
+bcrypt-based KDF to protect secret keys.
+
+Signatures and keys are 100% compatible with OpenBSD.
+
+passphrase-20140902.diff adds the ability to add, change, or remove
+secret key passphrases. This function is not currently available on
+OpenBSD but in no way undermines compatibility of keys and signatures.
+
+HOWTO and the manpage contain sample usage.
+
+mancha <mancha1 AT zoho DOT com>
+
+Based on http://sourceforge.net/projects/slackdepot/files/signify/,
+this fork builds libsignify in static and shared mode.
+
+This also exposes signify as a library for other people to use and
+embed it in their codebase.
+
+Harshavardhana <harsha AT harshavardhana DOT net>