correctly change binaries

[kostya]

like this
#!/usr/bin/env ruby

-- encoding : utf-8 --

but not

-- encoding : utf-8 --

#!/usr/bin/env ruby

[mryan43]

Hm I never tought about this one. My executable files usualy don't have an extension and magic_encoding skips them.

I agree that the current behaviour is wrong and I will fix this soon ! thx for the report :)