fix-gem-install-cocoapods.md

Fixed gem install cocoapods

If you found error message like this :

Error installing cocoapods: ERROR: Failed to build gem native extension

You should re-install ruby first before install cocoapods.

$ brew reinstall ruby

Add the below to your path

$ export PATH="/usr/local/opt/ruby/bin:$PATH"

If needed add these flags.

$ export LDFLAGS="-L/usr/local/opt/ruby/lib"
$ export CPPFLAGS="-I/usr/local/opt/ruby/include"