Fix truncated text nodes

[josher19]

Text containing '<' was getting truncated.
This could cause a problem in nodes of type pre, textarea or script.
Fixes gtzilla/fastFrag#9

[josher19]

PS: Would be nice to be able to do "around the world" translation:

HTML --> JSON --> HTML

and compare generated HTML to original HTML.

[gtzilla]

Hey, thanks for catching this. It might be cool to include your new test in the dropdown menus for easy access, though that might be outside the scope of your changes. I agree, adding an around-the-world feature would be nice, and I am certainly happy to add the patch, though I haven't been able to devote much new development time to the project in the last few months. Now that app engine costs money, I'm not sure how much effort should be put into the platform though. Regardless, thanks for the patch. Always welcome, should be updated, let me know if you see any more issues.