Letters a-z functions

Added functions a-z (not a,c,t) but functions are not populated yet.
Must test b, d, e
Added letters and space function

Added letters b to z, except c,t, and letters from previous commit, along with the space function.
Tested few letters

Justin: created a new arc() function for smaller letters
Tested letters a to p
Completed WriteLEtter
Revert "Completed WriteLEtter"

This reverts commit 98fdb76b73496be9ad2897520821732d8cfef6b0.
Finished WriteAlphabet

Importable file that allows writing letters for the scribblerbot
Changed WriteLetters to be easier to use

Moved alphabets to another file --> easier to edit
Merge branch 'letters_t'

Conflicts:
	WriteLetters.py