build: add NEWS file

Create a NEWS file and fill in release information.

Signed-off-by: David Rheinsberg <david.rheinsberg@gmail.com>

Author: dvdhrm

NEWS.md

@@ -0,0 +1,16 @@
+# r-efi-string - UEFI String Types and Converters
+
+## CHANGES WITH 0.1.0:
+
+        * Initial release of r-efi-string.
+
+        * New `str16::EfiStr16` type, which is similar to `std::ffi::CStr` and
+          wraps a 0-terminated UEFI string based on something resembling
+          UTF-16.
+
+        * The `str16::EfiString16` type is still only a stub and not included
+          in this release.
+
+        Contributions from: David Herrmann, Tom Gundersen
+
+        - Tübingen, 2019-04-16