Added generic error fn

src/extensions/generic_error.rs

@@ -1,6 +1,18 @@
 use std::fmt::Display;
 
-
+/// This is a wrapper for all errors. The error must implement display at least.
+/// Usage:
+/// ```
+/// use actix_web_utils::enums::error::Error;
+/// use actix_web_utils::extensions::generic_error::GenericError;
+/// let generic_error = GenericError::wrap(Error::Unspecified);
+/// //Use it as you please
+/// ```
 pub struct GenericError<E: Display> {
     pub error: E
+}
+impl<E: Display> GenericError<E> {
+    pub fn wrap(e: E) -> GenericError<E>{
+        GenericError { error: e }
+    }
 }