Update README.md

README.md

@@ -8,12 +8,12 @@ jvm-top lets you monitor your Java/Scala/.. server applications from the termina
 
 # Running
 
-*Requirement*: a JDK on the server and `JAVA_HOME` environment variable pointing to it. It won't work with just a JRE.
+*Requirement*: a JDK8 on the server and `JAVA_HOME` environment variable pointing to it. It won't work with just a JRE.
 
-To install:
- 1. Download the [release](https://github.com/ajermakovics/jvm-mon/releases) 
- 2. Unzip/untar
- 3. Run `./bin/jvm-mon` from extracted directory
+To run:
+ 1. Download the [release](https://github.com/ajermakovics/jvm-mon/releases) and extract
+ 2. Set `JAVA_HOME` environment variable: `export JAVA_HOME=/path/to/your/jdk8`
+ 3. Execute `./bin/jvm-mon` from extracted directory
 
 Usage:
 - Select a JVM process and press `Enter` to monitor it