Modify Readme.md

[aptmess]

Additional info in README.md

1. Configuration, point 3: (Instruction for WSL 2)

• Donwload Docker, Ubuntu 20.04 - follow instruction
• Problems with start docker - run command sudo /etc/init.d/docker start
• WSL Linux file system from Windows: run command explorer.exe .

2. Configuration, point 5:

• Solve problem "You must install at least one postgresql-client- package": run command sudo apt-get install postgresql-client

3. Pubmed

• Download JDK 8+

4. Optional: Semantic Scholar

• Error in Linux & Mac OS code - wrong way to file pubtrend-dev.jar:

...
java -cp build/libs/pubtrends-dev.jar org.jetbrains.bio.pubtrends.ss.SemanticScholarLoader --fillDatabase $(pwd)/$file
...