README: Fix invalid escape sequence in string

The README contains an example of converting a string literal to a
regex, but the string literal contains an invalid escape sequence: "\."

Of course, this is a legal regex pattern, but in order to silence the
warning, use "\\." instead. The pattern matches as it does without the
extra escape.
Merge pull request #68 from modocache/fix-readme-regex-warning

README: Fix invalid escape sequence in string
Update Podfile
Preliminary iOS 8 support
Revert the original changes and use NSClassFromString.
Merge pull request #70 from swizzlr/ios8

Fix NSURLSessionConfiguration swizzle in iOS 8
Update LSNSURLSessionHook.m

In the current implementation, the presence of [NSURLSessionConfiguration class] in the ternary appeared to cause the class to be loaded - even though it isn't returned - and that was causing side effects in iOS7.  Replacing that with NSClassFromString worked.  I also split that long line up.
Fixed failing Travis build

Fix for the failing travis build.

I got the fix from here: http://docs.travis-ci.com/user/osx-ci-environment/
Merge pull request #76 from augustj/iOS8-Fix

Update LSNSURLSessionHook.m
Merge pull request #78 from ajimix/patch-1

Fixed failing Travis build