Make all examples compile & run without failure.

examples/03_args.rs

@@ -41,7 +41,6 @@ fn main() {
                 .long("config"),
             Arg::new("input")
                 .about("the input file to use")
-                .index(1)
                 .required(true),
         ])
         // *Note* the following two examples are convenience methods, if you wish

examples/05_flag_args.rs

@@ -29,9 +29,8 @@ fn main() {
                                            // also has a conflicts_with_all(Vec<&str>)
                                            // and an exclusive(true)
         )
-        // NOTE: In order to compile this example, comment out requires() and
-        // conflicts_with() because we have not defined an "output" or "config"
-        // argument.
+        .arg("-c, --config=[FILE] 'sets a custom config file'")
+        .arg("<output> 'sets an output file'")
         .get_matches();
 
     // We can find out whether or not awesome was used

examples/06_positional_args.rs

@@ -33,8 +33,7 @@ fn main() {
         // requires "config"
         // Note, we also do not need to specify requires("input")
         // because requires lists are automatically two-way
-        // NOTE: In order to compile this example, comment out conflicts_with()
-        // because we have not defined an "output" argument.
+        .arg(Arg::new("output").about("the output file to use").index(3))
         .get_matches();
 
     // We can find out whether or not "input" or "config" were used

examples/07_option_args.rs

@@ -33,9 +33,8 @@ fn main() {
                                            // also has a conflicts_with_all(Vec<&str>)
                                            // and an exclusive(true)
         )
-        // NOTE: In order to compile this example, comment out conflicts_with()
-        // and requires() because we have not defined an "output" or "config"
-        // argument.
+        .arg("-c, --config=[FILE] 'the config file to use'")
+        .arg("<output> 'the output file to use'")
         .get_matches();
 
     // We can find out whether or not "input" was used

examples/14_groups.rs

@@ -34,7 +34,7 @@ fn main() {
         .group(
             ArgGroup::new("vers")
                 .required(true)
-                .args(&["ver", "major", "minor", "patch"]),
+                .args(&["set-ver", "major", "minor", "patch"]),
         )
         // Arguments can also be added to a group individually, these two arguments
         // are part of the "input" group which is not required