Merge pull request #29 from erkutaras/develop

release v1.5.0

Update README.md

Merge pull request #26 from erkutaras/develop

add button visibility function

Update README.md

Update README.md

Update README.md

Merge pull request #20 from erkutaras/develop

support animation for loading and loading-with-content states

Merge pull request #19 from erkutaras/develop

update show methods

Merge pull request #18 from erkutaras/develop

add loading message

Merge pull request #14 from erkutaras/develop

update version and readme file