New example to demo use of PersistentCookieStore.
Merge pull request #605 from fineswap/PersistentCookieSample

New example to demo use of PersistentCookieStore.
New example to demo use of self-signed CA's in the library.
Merge pull request #606 from fineswap/CustomCASample

New example to demo use of self-signed CA's in the library.
Fixes to Custom CA Sample
Merge commit 'ba17f5ab3480fc920e25aaa11f2fc366bb91f520'