update version info for TW290b3 release
#170: embedded literal HTML breaks PhoneGap

when submitting TW documents to http://build.phonegap.com, they produced
mangled output because the recreateOriginal() function includes embedded
/body and /html syntax. The fix is to split the literal text using '+',
so that the strings are unaffected, but PhoneGap will not stumble on
them.