Add basic gitignore functionality

No support for wildcards and exact matches might screw up nested
directories. The Globbing functionality seems like its going to be a
pain to properly match up.

src/printer.rs

@@ -12,9 +12,9 @@ pub struct ColorPrinter<'a> {
     pub file_match: &'a FileMatch,
 }
 
-struct SimplePrinter<'a> {
-    config: &'a Config,
-    file_match: &'a FileMatch,
+pub struct SimplePrinter<'a> {
+    pub config: &'a Config,
+    pub file_match: &'a FileMatch,
 }
 
 impl<'a> Printer for SimplePrinter<'a> {
@@ -71,6 +71,7 @@ impl<'a> Printer for ColorPrinter<'a> {
         };
 
         let mut term = term::stdout().unwrap();
+
         term.fg(term::color::YELLOW).unwrap();
         term.attr(term::Attr::Bold).unwrap();
         simple_printer.print_file_name();