first version of custom_rqrcode
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Update README.md
Update README.md
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remove useless code
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Update README.md
Added :bsize option for background image
revise README files
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Added :geometry option to adjust the position of QR code image
Added :gemetry option to adjust the position of QR code image
add :fsize option to resize final images
Added CQRcode class to handle rendering
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Update README.md
Update custom_rqrcode.rb