Add Readme file update for install via composer
psalm static checker added
phan and phpstan update with ignoring vendor and test files as they are
not needed in final system
Rename the class from ReadEnvFile to DotEnv.
Add everything to a composer json file so it can be published to
composer repository.
Add phpUnit tests for system
If there was this
FOO="bar"
Then the # comment block was attached to bar because FOO was seen as a
multiline block although the quotes are in one line only
