• allow to choose between Image and ImageBackground wrapping component

Switch to use ImageBackground component #36

• support for borderRadius prop

• support for React Native 0.50

• support for resizeMode prop, cover by default
• loading image can be set by defultSource prop
• updated dependencies

• fix for touchable component

fixed #19

• Updated for new versions of React Native
• Rewritten to ES2015
• Size formula is now exposed #18
• Fixed problem when the image file has different width and height #17
• Add support for image loading lifecycle #16

• unnecessary code used in example project was removed
• compatibility with react-native 0.26

• improved compatibility
• resolved issue with Children inside components
• docs for example