Update podspec for INAppStoreWindow 1.5.
contentViewFrame check for hideTitleBarInFullScreen to adjust the content view correctly.
Identation
Use native title drawing where appropriate.
Merge pull request #176 from petroules/title-drawing

Native title rendering
Adjusted code based on PR comments
Merge pull request #174 from nscoding/master

Content view frame checks for hideTitleBarInFullScreen in Fullscreen mode
Merge pull request #173 from petroules/podspec

Update podspec for INAppStoreWindow 1.5.
Use relative URLs for images in README