Update README.md

Author: dtanner

README.md

@@ -4,5 +4,7 @@ groovy-excel-reader
 Utility groovy class to read MS Excel xlsx documents
 
 Groovy parser for Microsoft Excel spreadsheets.
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 Based on Goran Ehrsson's post: http://www.technipelago.se/content/technipelago/blog/44
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 Updated to handle xlsx document types, and modified to just return the string formatted value of each cell (ignore types)