Reorganize according to amethyst#191, minor reformatting

.travis.yml

@@ -26,7 +26,6 @@ before_script:
 
 # Format the codebase, generate documentation, compile the engine, run tests.
 script: |
-      # cargo fmt -- --write-mode=diff &&
       cargo local-pkgs doc --no-deps -v &&
       cargo local-pkgs build -v &&
       # Build and test without profiler

amethyst_config/examples/main.rs

@@ -1,52 +1,15 @@
-
-#[macro_use]
 extern crate amethyst_config;
 
-use amethyst_config::Config;
-
-config! {
-    #[derive(Debug)]
-    pub struct DisplayConfig {
-        pub title: String = "Amethyst game".to_string(),
-        pub brightness: f64 = 1.0,
-        pub fullscreen: bool = false,
-        pub dimensions: (u16, u16) = (1024, 768),
-        pub min_dimensions: Option<(u16, u16)> = None,
-        pub max_dimensions: Option<(u16, u16)> = None,
-        pub vsync: bool = true,
-        pub multisampling: u16 = 0,
-        pub visibility: bool = true,
-    }
-}
-
-config! {
-    #[derive(Debug)]
-    pub struct LoggingConfig {
-        pub file_path: String = "new_project.log".to_string(),
-        pub output_level: String = "warn".to_string(),
-        pub logging_level: String = "debug".to_string(),
-    }
-}
-
-config! {
-    #[derive(Debug)]
-    pub struct ExampleConfig {
-        /// Configuration for display and graphics
-        pub display: DisplayConfig = DisplayConfig::default(),
-        /// Configuration for output
-        pub logging: LoggingConfig = LoggingConfig::default(),
-    }
-}
+use amethyst_config::{Config, Element};
 
 fn main() {
-    let path = format!("{}/examples/config.yml", env!("CARGO_MANIFEST_DIR"));
-    let res = ExampleConfig::load_no_fallback(&path);
+    let res = Config::from_file("../../config/config.yml");
 
     match res {
         Ok(cfg) => {
-            println!("{:#?}", cfg);
+            println!("{}", cfg.to_string());
 
-            if let Err(e) = cfg.write(&path) {
+            if let Err(e) = cfg.write_file() {
                 println!("{}", e);
             }
         },