Update release notes with 1.0.0 release
# RELEASE NOTES
+04 June 2018 - Apache NimBLE v1.0.0
+
+For full release notes, please visit the
+[Apache Mynewt Wiki](https://cwiki.apache.org/confluence/display/MYNEWT/Release+Notes).
+
+Apache NimBLE is an open-source Bluetooth 5.0 stack (both Host & Controller) that completely
+replaces the proprietary SoftDevice on Nordic chipsets.
+
+New features in this version of NimBLE include:
+
+* Initial version after moving to separate repo - https://github.com/apache/mynewt-nimble
+* removal of deprecated bletiny application (superseded by btshell)
+* Added NimBLE Porting Layer (NPL) which abstracts OS specific details to improve portability
+* Initial ports for FreeRTOS and RIOT OS
+* Support for advertising up to 1650 bytes of data with Extended Advertising
+* Support for host flow control
+* Support for Direct Test Mode (DTM) via HCI interface
+* Support for Device Information Service
+* Bugfixes for issues found on UPF59 and during BT certification testing
+* Lots of other bugfixes, minor enhancements and optimisations
+* Mesh improvements
+
+If working on next-generation RTOS and Bluetooth protocotol stack
+sounds exciting to you, get in touch, by sending a mail to the Apache Mynewt
+Developer's list, dev@mynewt.apache.org.
