Patch the README of examples (#47)

* perf(example): patch the README of examples

* fix(clippy): fix verbose code in examples

Author: clearloop

Cargo.lock

@@ -1,6 +1,6 @@
 //! HTML Templates
 /// Production HTML template
-pub const HTML_TEMPLATE: &'static str = r#"
+pub const HTML_TEMPLATE: &str = r#"
 <script type="module">
  import init, { ${run} } from '${entry}';
  (async () => {
@@ -11,7 +11,7 @@ pub const HTML_TEMPLATE: &'static str = r#"
 "#;
 
 /// Development HTML template
-pub const DEV_HTML_TEMPLATE: &'static str = r#"
+pub const DEV_HTML_TEMPLATE: &str = r#"
 <script type="module">
  import init, { ${run} } from '${entry}';
  (async () => {

crates/backend/src/html.rs

@@ -41,7 +41,7 @@ pub struct Crate {
 impl Crate {
     /// New crate data
     pub fn new() -> Result<Crate, Error> {
-        let root = env::current_dir().unwrap_or(PathBuf::from("."));
+        let root = env::current_dir().unwrap_or_else(|_| PathBuf::from("."));
         let manifest = root.join("Cargo.toml");
         let data = MetadataCommand::new()
             .manifest_path(&manifest)
@@ -69,7 +69,7 @@ impl Crate {
             idx,
             data,
             debug: true,
-            root: root.to_path_buf(),
+            root: root.clone(),
             wasm: root.join("pkg"),
         })
     }

crates/backend/src/manifest.rs

@@ -20,7 +20,7 @@ impl Error {
         IE: Clone,
     {
         if let Err(e) = r {
-            return Err(Error::from(E::from(e.clone()).into()));
+            Err(E::from(e.clone()).into())
         } else {
             Ok(())
         }

crates/core/src/err.rs

@@ -1,6 +1,6 @@
 [package]
 name = "epm"
-version = "0.1.5"
+version = "0.1.6"
 authors = ["clearloop <[email protected]>"]
 edition = "2018"
 description = "The Elvis Package Manager"