Update pronto-fasterer.gemspec

[KieranP]

Fixed #16

cc @ashkulz

[ashkulz]

@KieranP have you tested that it works properly?

[campbecf]

@ashkulz @KieranP We may want to consider something like

s.add_runtime_dependency('fasterer', '>= 0.11', '< 1.0')

Since we've had to have a PR for each minor version bump.

See:
#9
#12
#14

I'm testing this on a fork I've made.

[campbecf]

No issues using fasterer 0.11 so far. Specs pass as well.

[KieranP]

@campbecf Thanks for the suggestion. Have changed to ('fasterer', '>= 0.10', '< 1.0')

[hlascelles]

Can we get a new gem cut please?

[hlascelles]

@ashkulz can we get a new gem cut please? The latest release does not have this change yet... https://rubygems.org/gems/pronto-fasterer/versions/0.11.2

Thanks in advance!