add support for lualatex#2

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cvsintellect wants to merge 3 commits intoscribtex:masterfrom

cvsintellect:master

Commits on Jan 5, 2014

add support for lualatex

cvsintellect
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Srini
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switch clsi repo for testing

cvsintellect
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Srini
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Commits on Feb 18, 2014

json gem is required since curl uses json format

cvsintellect
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Srini
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