try-catch substituted by @test(expected=InvalidSmilesException) in SmilesParserTest.java (= junior task 16).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Added a new contributor

Change-Id: I04ad1ea3b224cd65012b6b2111d565a11c49613b
Remove extra '}' from javadoc.

Change-Id: I7d49c4903169444ee06e183781d83d85031e36a1
Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>