scripts

tedlium.letter.dict added as well as a minor modification in add_prons_for_acronyms.sh

Modified in both cmu.letter.dict and add_prons_for_acronyms.sh to finalize at least in the CMU phone set side of generarting pronunciation sequences for acronyms

A few trailing tokens added to cmu.letter.dict

Some number tokens appended to cmu.letter.dict

CMU letter dictionary added