Fix auth sample

Make testing saner

Fix hello world example

Git ignore XCode derived files across the repo

Remove a few more linuxbrew references

PHP: update package.xml to prepare for 0.6.1 release

Backport run_tests.py shebang fix from master

Fix #2275 (Make sure PHP example can be run with Apache)

Normal constants, like most other things, are cleaned up during
RSHUTDOWN.
We need to explicitly mark them as persistent using CONST_PERSISTENT

"gRPC in 3 minutes" for Python

Mark Python example docs as moved to grpc.io

Release 0 11 update README.mds

Fixed missing item in Node library file list

Make podspec lint pass for submitting ObjC beta to Cocoapods

C# Remove route guide example text

Bugfix: correct circular arg ref