Replace buffer before asking to resolve

[lencioni]

To reproduce:

1. Run fix imports on a file that has multiple words to import--some which have exact matches and some which need prompts
2. Select matches from all prompts
3. Examine buffer

I would expect to see all of the missing imports to be imported. Instead, I only see the ones that were prompted for. Running fix imports a second time seems to get the rest.

I fixed this by running the replace command before asking to resolve. This will make sure that all things get updated properly.

Fixes #5

[trotzig]

Thanks! I'll merge once you reply to the question I added inline.