Update drone.yml and RELEASE.md

RELEASE.md

-## Release 0.0.15
-
 ### Features and Improvements:
-
 * Binaries functional on Debian 9 and Ubuntu 18.04.
 * Archive of root file system.
 
 ### Changes and Fixes:
-
 * Build system functional and able to release.
 
 ### Contributions:
-
 * Patience.
+

drone.yml

     event: [ tag ]
   depends_on: [ build ]
   settings:
-    title: Radangel linux-amd64 # file or string
+    title: Release # file or string
     note: RELEASE.md # file or string
     draft: false
     prerelease: false
     insecure: false
     api_key:
       from_secret: gitea-release
-    checksum: [ md5, sha1 ] # [ md5, sha1, sha256, sha512, adler32, crc32 ]
+    checksum: [ md5 ] # [ md5, sha1, sha256, sha512, adler32, crc32 ]
     file_exists: overwrite # overwrite, skip, fail
-    files: # wildcard * supported, but hash fails on dir
-      - src/radangel
-      - src/contrib/websockify
-      - radangel-release.tar.gz
+    files: # wildcard * supported, checksum fails on directories
+      - *.tar.gz