Added Tomorrow theme to project, other updates

+ Added tomorrow theme
+ added spectrum.zsh
+ added zsh/lib directory
+ updated prompt
+ updated colors
+ set vim theme to Tomorrow-Night-Bright
+ moved some zsh files to zsh/lib

zsh/lib/spectrum.zsh

@@ -0,0 +1,28 @@
+#! /bin/zsh
+# A script to make using 256 colors in zsh less painful.
+# P.C. Shyamshankar <sykora@lucentbeing.com>
+# Copied from http://github.com/sykora/etc/blob/master/zsh/functions/spectrum/
+
+typeset -Ag FX FG BG
+
+FX=(
+    reset     "%{%}"
+    bold      "%{%}" no-bold      "%{%}"
+    italic    "%{%}" no-italic    "%{%}"
+    underline "%{%}" no-underline "%{%}"
+    blink     "%{%}" no-blink     "%{%}"
+    reverse   "%{%}" no-reverse   "%{%}"
+)
+
+for color in {000..255}; do
+    FG[$color]="%{[38;5;${color}m%}"
+    BG[$color]="%{[48;5;${color}m%}"
+done
+
+# Show all 256 colors with color number
+function spectrum_ls() {
+  for code in {000..255}; do
+    print -P -- "$code: %F{$code}Test%f"
+  done
+}
+