Update .gitignore [ci skip]

Author: sergeyklay

.gitignore

@@ -1,7 +1,9 @@
-.settings
-.buildpath
-.project
-.idea
+# Please do not use this ignore file to define platform specific files.
+#
+# For these purposes create a global .gitignore file, which is a list of rules
+# for ignoring files in every Git repository on your computer.
+#
+# https://help.github.com/articles/ignoring-files/#create-a-global-gitignore
 
 jaeger-idl
 vendor