added proper comments

Author Vijeth <vijeth.patil@gmail.com>
Author date 2011-08-11 13:Aug:th
Author local date 2011-08-11 06:Aug:th -0700
Committer Vijeth <vijeth.patil@gmail.com>
Committer date 2011-08-11 13:Aug:th
Committer local date 2011-08-11 06:Aug:th -0700
Commit 353f3d68008320319034853264d3f20746fe19ff
Tree 5887a169828f717e44d7b2633329a96fd6bd3c89
Parent 696a5b0832d8b0b3813eb9a707ec240c8b341612
added proper comments
Affected files:
lib/processors/epub_processor.php
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