add gitignore file

.gitignore

@@ -0,0 +1,32 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile ~/.gitignore_global
+
+/tmp
+*/**/*un~
+*/**/*.test
+*un~
+.DS_Store
+*/**/.DS_Store
+.ethtest
+*/**/*tx_database*
+*/**/*dapps*
+build/_vendor/pkg
+
+#*
+.#*
+*#
+*~
+.project
+.settings
+
+# used by the Makefile
+/build/_workspace/
+/build/bin/
+/geth*.zip
+
+# travis
+profile.tmp
+profile.cov