Added ignore patterns for projects generated using seam-gen

SeamGen.gitignore

+/bootstrap/data
+/bootstrap/tmp
+/classes/			# all class files
+/dist/				# contains generated war files for deployment
+/exploded-archives/		# war content generation during deploy (or explode)
+/test-build/			# test compilation (ant target for Seam)
+/test-output/			# test results
+/test-report/			# test report generation for, e.g., Hudson
+/target/			# maven output folder
+temp-testng-customsuite.xml	# generated when running test cases under Eclipse
+
+# Thanks to @VonC and @kraftan for their helpful answers on a related question
+# on StackOverflow.com:
+# http://stackoverflow.com/questions/4176687
+# /what-is-the-recommended-source-control-ignore-pattern-for-seam-projects