Update step 1

[DeniseSl22]

@egonw : could we update the make install file, so that it download all the requirements in one go (so also curl, git, etc.), as listed in the readme.md?

Step 1. Requirements
You need the following programs and experience with a Makefile:

curl
git
zip
java
javac
bash
You also need four Java archives in the libs/ folder that you can download (and update) with:

make install

[egonw]

The reason for that is that these are often distributed by the operating system, at least in the GNU/Linux, Unix world.

We could add this line:

apt get install curl git zip

but that may be different for different Linux flavors.

What do you think?