Update documentation.

+ Remove unused file.

ChangeLog.Psi+.txt

@@ -1,4 +1,9 @@
-20180306  tehnick
+20201223  tehnick
+v1.5
+  ! Git repository https://github.com/psi-plus/main is not used in Psi+ project
+    anymore. All development is done in https://github.com/psi-im now.
+
+20180306  tehnick
 v1.3
   ! More patches were merged to Psi
   ! Multiple bug fixes and optimizations

README

@@ -1,5 +1,14 @@
-This repository is required to build Psi+.
-It contains patches, additional resources,
-like images and maybe some sounds.
+This repository was used in Psi+ development until Psi+ >= 1.5.x.
+Now all development is done in https://github.com/psi-im
+
+Current difference between Psi+ and Psi projects is described at:
+https://github.com/psi-im/psi#development
+
+For getting of Psi+ sources use special git repo:
+https://github.com/psi-plus/psi-plus-snapshots
+
+Tarballs with Psi+ releases are available here:
+https://github.com/psi-plus/psi-plus-snapshots/tags
+
+Have fun!
 
-If you don't want to bother with applying patches just use snapshots repo https://github.com/psi-plus/psi-plus-snapshots