Title needs to be encoded before used in the `disqus_title` variable

[andydrizen]

As the title is passed directly into the disqus_title, any single quotes within the title will cause a fatal error in the disqus javascript code.

e.g. if your title is "Problems for PayPal's iOS SDK"

then disqus_title is:

var disqus_title = 'Problems for PayPal's iOS SDK'; 

To fix this issue, one could encode the single quote to obtain:

var disqus_title = 'Problems for PayPal's iOS SDK';