.gitignore handling fails if .gitignore contains "var"

I have a g8 template with a .gitignore that includes the line `var/`. It turns out that if `var` is present anywhere in .gitignore, the template fails.

Here's a repro using a [test template I made](https://github.com/mattolenik/g8-bug.g8):
```
$ g8 https://github.com/mattolenik/g8-bug.g8 --name=test
Ignoring unrecognized parameter: name

Template applied in /Users/mattolenik/dev/g8bug/.
```

Here it is again, without specifying the name parameter:
```
g8 https://github.com/mattolenik/g8-bug.g8

Template applied in /Users/mattolenik/dev/g8bug/.
```

Notice that in both instances the template gets applied to `./` instead of `./test` as would normally happen. If you remove the `var` line from the .gitignore, it works fine. Setting `verbatim=.gitignore` makes no difference. Other verbatim files work just fine. I haven't tested against other .*ignore files but if they're built with shared code they may broken, too.