Merge branch '126-add-snapcraft-badge' into 'dev'

Resolve "Add snapcraft badge"

Closes #126

See merge request erlenyd/mysql-query-profiler!132

README.md

 # MySQL Query Profiler
 
+[![Get it from the Snap Store](https://snapcraft.io/static/images/badges/en/snap-store-black.svg)](https://snapcraft.io/mysql-query-profiler)
+
 [![Download](https://api.bintray.com/packages/kpro4/mysql-query-profiler/mysql-query-profiler/images/download.svg)](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler/_latestVersion)
 
 ## Installation and use
 
 ### Install
 
+#### **Prerequisites for all platforms**
+
+For all platforms, a user on a MySQL server using the _XProtocol_ for authentication (default on newer versions) with enough privileges\* is required.
+
 #### **Linux**
 
 First, install the dependency `libsecret`:
@@ -18,7 +24,7 @@ Depending on your distribution, you will need to run the following command:
 
 Debian based: If an error mentioning org.freedesktop.secrets pops up during app runtime, install `gnome-keyring`
 
-Either use the AppImage, deb, or rpm file in [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler) or install the snap:
+Either use the _AppImage_, _deb_, or _rpm_ file from [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler) or install the snap:
 
 ```bash
 snap install mysql-query-profiler
@@ -26,11 +32,11 @@ snap install mysql-query-profiler
 
 #### **Windows**
 
-Install the exe-file from [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler).
+Install the exe-file from [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler). Click on the newest version, then _files_.
 
 #### **MacOS**
 
-Use the zip-file from [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler). We recommend unzipping the file with [The Unarchiver](https://theunarchiver.com/), and not with Archive utility as it may not work.
+Use the zip-file from [Bintray](https://bintray.com/kpro4/mysql-query-profiler/mysql-query-profiler). Click on the newest version, then _files_. We recommend unzipping the file with [The Unarchiver](https://theunarchiver.com/), and not with Archive utility as it may not work.
 
 ### Usage