Added new vim colorscheme, updated prompt

Added smyck colorscheme, which I foud on reddit today.
Also, copied the prompt from zholman's dotfiles

zsh/window.zsh

@@ -0,0 +1,19 @@
+# From http://dotfiles.org/~_why/.zshrc
+# Sets the window title nicely no matter where you are
+function title() {
+  # escape '%' chars in $1, make nonprintables visible
+  a=${(V)1//\%/\%\%}
+
+  # Truncate command, and join lines.
+  a=$(print -Pn "%40>...>$a" | tr -d "\n")
+
+  case $TERM in
+  screen)
+    print -Pn "\ek$a:$3\e\\" # screen title (in ^A")
+    ;;
+  xterm*|rxvt)
+    print -Pn "\e]2;$2\a" # plain xterm title ($3 for pwd)
+    ;;
+  esac
+}
+