bump podspec version to create new release (#7)

Merge pull request prolificinteractive#105 from prolificinteractive/f…

…eature/open_variables_functions

Opened up variables and functions

Bumped pod version

Merge pull request prolificinteractive#85 from prolificinteractive/sw…

…ift-3.0

Swift 3.0 update

Bumped Pod version to 1.5.0