Update md files

Author: steccas

README.md

@@ -15,6 +15,8 @@ It is a very newborn and basic project, but it can grow and get way better, if y
 You can also start contributing now! If you wish to do so please feel free to fork the project and propose modifications that we can merge.
 The more we are the better!
 
+You can also consider a donation and remember to check my links.
+
 A coffee is always a gesture of LOVE ❤️
 
 <a href="https://www.buymeacoffee.com/steccas" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/lato-yellow.png" alt="Buy Me A Coffee" height="41" width="174"></a>

changhelog_install.md

@@ -0,0 +1,50 @@
+# Changelog
+- security patches
+- updated dependencies
+
+If you prefer there are also some build archives, which you can unpack and run where you prefer.
+
+PLEASE NOTE:
+If you want to use the client you need to create a protonMail account [here](https://go.getproton.me/SHJN).
+
+# Install Instructions
+## Windows
+Uninstall previous version and install via the provided msi.
+
+## Ubuntu & Debian based Linux distros
+Better remove previous version for cleaner install
+```
+sudo apt remove proton-client
+```
+Install the deb package using
+```
+sudo apt install ./proton-client-1.2.3-amd64.deb
+```
+or
+```
+sudo dpkg -i ./proton-client-1.2.3-amd64.deb
+```
+## RHEL based distros
+RPM is not tested because I converted it using alien, so please notify me if there are any problems.
+
+Install using:
+```
+sudo rpm –i proton-client-1.2.3-2.x86_64.rpm
+```
+
+To uninstall:
+```
+sudo rpm –e proton-client-1.2.3-2.x86_64.rpm
+```
+
+## Arch based distros like Manjaro
+Download **proton-client-1.2.3-1-x86_64.arch.zip**
+```
+unzip proton-client-1.2.3-1-x86_64.arch.zip
+sudo pacman -U ./proton-client-1.2.3-1-x86_64.pkg.tar.zst
+```
+
+I have no time nor patience to publish the package to AUR so any help is welcome.
+
+## Mac
+Use one of the archives for Mac (proton-client-1.2.3-mac-x86_64.zip); inside, you will find an app bundle ready to be moved when makes sense to you (probably the app folder) and being run.