updated .gitignore so I can keep IDEA project files in the same directory.
updated .gitignore so I can keep IDEA project files in the same directory.

samanalysis/gremlin,ccagnoli/gremlin,tinkerpop/gremlin,ccagnoli/gremlin,cesarmarinhorj/gremlin,cesarmarinhorj/gremlin,samanalysis/gremlin,tinkerpop/gremlin