shebang should be ignored by all rules

[norio-nomura]

Current implementation detects two operator_usage_whitespace violations in shebang.
e.g:

$  echo '#!/usr/bin/env swift'|swiftlint lint --enable-all-rules --use-stdin
<nopath>:1:7: warning: Operator Usage Whitespace Violation: Operators should be surrounded by a single whitespace when they are being used. (operator_usage_whitespace)
<nopath>:1:11: warning: Operator Usage Whitespace Violation: Operators should be surrounded by a single whitespace when they are being used. (operator_usage_whitespace)
Done linting! Found 2 violations, 0 serious in 1 file.

[marcelofabri]

Maybe we should do some pre-processing in SwiftLint before passing the contents to the rules? This feels hacky and potentially dangerous with offsets, positioning, etc, but I don't think all the rules should treat this by theirselves.

[ChristopherRogers]

I'd like to add that if used with autocorrect, it turns into #!/usr / bin / env swift.