Script Summary: converts words to numbers on craigslist ads. so "Four" converts to "4"
The script does a substitution converting the text to a number character so
"one" converts to "1"
"One" converts to "1"
"ONE" converts to "1"
"two" converts to "2"
"Two" converts to "2"
"three" converts to "3"
"Three" converts to "3"
"four" converts to "4"
"Four" converts to "4"
"five" converts to "5"
"Five" converts to "5"
"six" converts to "6"
"Six" converts to "6"
"seven" converts to "7"
"Seven" converts to "7"
"eight" converts to "8"
"Eight" converts to "8"
"nine" converts to "9"
"Nine" converts to "9"
"zero" converts to "0"
"Zero" converts to "0"
"TWO" converts to "2"
"THREE" converts to "3"
"FOUR" converts to "4"
"FIVE" converts to "5"
"SIX" converts to "6"
"SEVEN" converts to "7"
"EIGHT" converts to "8"
"NINE" converts to "9"
"ZERO" converts to "0"
