[WIP] Fix IncludeFixer to comply with the documentation

| Q             | A
| -------------:| ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no
| Fixed tickets | #141 
| License       | MIT

- [x] Added tests with string concatenation for file path
- [x] The convert double with single quotes has been removed (It should be fix with a StringFixer perhaps)
- [ ] Add support for multi statements in the same line