Add example executables to get name from character and vice versa (#25)

examples/character.rs

@@ -0,0 +1,12 @@
+use std::env;
+
+fn main() {
+    let mut arguments = env::args().into_iter();
+    arguments.next(); // Executable name
+    for argument in arguments {
+        match unicode_names2::character(&argument) {
+            Some(c) => println!("{}", c),
+            None => println!("{}: no such character", argument),
+        }
+    }
+}

examples/name.rs

@@ -0,0 +1,14 @@
+use std::env;
+
+fn main() {
+    let mut arguments = env::args().into_iter();
+    arguments.next(); // Executable name
+    for argument in arguments {
+        for c in argument.chars() {
+            match unicode_names2::name(c) {
+                Some(name) => println!("{}", name),
+                None => println!("{}: unknown character", argument),
+            }
+        }
+    }
+}