Dynamic Images and Padding

Changelog:

• Added flag to disable bold text --nobold
• Added flag to disable text wrapping --nowrap
• Moved to using only printf instead of a mix of echo/printf
• The script now aligns the cursor to the bottom of the
  terminal instead of using a hardcoded amount of newlines
• Image size and padding is now dynamic, the only difference on the user
  side is that instead of setting a long line of spaces as
  padding, you set your font width. This means that you set the
  var once and the script will just work at any window size.
• You can disable dynamic images and go back to the old
  behaviour with by using the --size or the in config var.
  $img_auto
• Manual padding now takes a count, so --padding 10 will pad
  the text 10 spaces.
• tput is now a dependency because we need (tput cols/lines/cup)
  for the dynamic images and it allows us to support more terminals.
• Color block width can now be changed with the flag --blockwidth.
  It takes a count like --padding so --blockwidth 10 will make
  the color blocks 10 spaces wide.

Let me know if you're having issues.