Use SPDX license format, update some links, and fix crates.io badge

Author: atouchet

Diff for: Cargo.toml

@@ -3,11 +3,11 @@ name = "javascriptcore"
 version = "0.0.5"
 edition = "2021"
 authors = ["Bruce Mitchener <[email protected]>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 readme = "README.md"
 description = "Bindings to the JavaScriptCore framework."
 keywords = ["javascript", "jsc", "scripting"]
-documentation = "https://docs.rs/crate/javascriptcore/latest"
+documentation = "https://docs.rs/javascriptcore"
 homepage = "https://github.com/endoli/javascriptcore.rs"
 repository = "https://github.com/endoli/javascriptcore.rs"
 categories = ["api-bindings"]

Diff for: README.md

@@ -1,6 +1,6 @@
 # javascriptcore
 
-[![](http://meritbadge.herokuapp.com/javascriptcore)](https://crates.io/crates/javascriptcore)
+[![](https://img.shields.io/crates/v/javascriptcore.svg)](https://crates.io/crates/javascriptcore)
 
 This crate provides a safe binding to the public API for
 [JavaScriptCore](https://trac.webkit.org/wiki/JavaScriptCore),

Diff for: javascriptcore-sys/Cargo.toml

@@ -3,11 +3,11 @@ name = "javascriptcore-sys"
 version = "0.0.5"
 edition = "2021"
 authors = ["Bruce Mitchener <[email protected]>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 readme = "README.md"
 description = "Raw bindings to the JavaScriptCore framework."
 keywords = ["javascript", "jsc", "scripting"]
-documentation = "https://docs.rs/crate/javascriptcore-sys/latest"
+documentation = "https://docs.rs/javascriptcore-sys"
 homepage = "https://github.com/endoli/javascriptcore.rs"
 repository = "https://github.com/endoli/javascriptcore.rs"
 categories = ["external-ffi-bindings"]