Update sample script example
Remove param.inout() from ping script example
Add `brew tap homebrew/science` to the Homebrew installation page
fix variable name for consistency
Re-order lines and use unwrap=True
Merge pull request #480 from will-moore/script_sample_gh-470

Script sample gh 470
Merge pull request #489 from mtbc/fix-code-examples-dev_4_4

in Java code example fix variable name for consistency
Merge pull request #488 from sbesson/hdf5_tap

Add `brew tap homebrew/science` to the Homebrew installation page