Support escaped '/'

Copied from chyh1990#151 by
@NBonaparte.

src/scanner.rs

@@ -1333,6 +1333,7 @@ impl<T: Iterator<Item = char>> Scanner<T> {
                     '\\' if !single => {
                         let mut code_length = 0usize;
                         match self.buffer[1] {
+                            '/' => string.push('/'),
                             '0' => string.push('\0'),
                             'a' => string.push('\x07'),
                             'b' => string.push('\x08'),

tests/spec_test.rs.inc

@@ -632,6 +632,14 @@ fn test_ex5_12_tabs_and_spaces() {
     assert_next!(v, TestEvent::OnDocumentEnd);
 }
 
+#[test]
+fn test_escaped_slash() {
+    let mut v = str_to_test_events(NS_ESC_SLASH).into_iter();
+    assert_next!(v, TestEvent::OnDocumentStart);
+    assert_next!(v, TestEvent::OnScalar);
+    assert_next!(v, TestEvent::OnDocumentEnd);
+}
+
 #[test]
 fn test_ex5_13_escaped_characters() {
     let mut v = str_to_test_events(EX5_13).into_iter();

tests/specexamples.rs.inc

@@ -100,6 +100,8 @@ const EX5_11 : &'static str =
 const EX5_12 : &'static str =
     "# Tabs and spaces\nquoted: \"Quoted\t\"\nblock:	|\n  void main() {\n  \tprintf(\"Hello, world!\\n\");\n  }";
 
+const NS_ESC_SLASH: &'static str = "\"\\/\"";
+
 const EX5_13 : &'static str =
     "\"Fun with \\\\\n\\\" \\a \\b \\e \\f \\\n\\n \\r \\t \\v \\0 \\\n\\  \\_ \\N \\L \\P \\\n\\x41 \\u0041 \\U00000041\"";