Set up gitignore and sample-gitognore

.gitignore

+# You can copy and/or modify this file to create your own .gitignore file.
+# This keeps generated files from being added to source control management.
+.gitignore
+.classpath
+.project
+bin/
+build/
+reports/
+.DS_Store*

sample-.gitignore

 # You can copy and/or modify this file to create your own .gitignore file.
 # This keeps generated files from being added to source control management.
 .gitignore
+.classpath
+.project
+bin/
 build/
 reports/
 .DS_Store*

sample-.hgignore

-# You can copy and/or modify this file to create your own .hgignore file.
-# This keeps generated files from being added to source control management.
-^\.hgignore
-^appinventor/build/
-^appinventor/reports/
-^appinventor/appengine/build
-^appinventor/appengine/reports
-^appinventor/buildserver/build
-^appinventor/buildserver/reports
-^appinventor/blockseditor/build
-^appinventor/blockseditor/reports
-^appinventor/blockslib/build
-^appinventor/blockslib/reports
-^appinventor/common/build
-^appinventor/common/reports
-^appinventor/components/build
-^appinventor/components/reports
-