added .gitattributes to fix wrong line-endings for crt, key and srl
bug #397 added .gitattributes to fix wrong line-endings for crt, key and srl (sstok)

This PR was merged into the master branch.

Discussion
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added .gitattributes to fix wrong line-endings for crt, key and srl

Commits
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f79bb9f added .gitattributes to fix wrong line-endings for crt, key and srl