Update version to 1.8.0-dev, update g word to 'generous'
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index d34c271..7b0c72e 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -22,7 +22,7 @@
 
 Pod::Spec.new do |s|
   s.name     = 'gRPC-Core'
-  version = '1.7.0-dev'
+  version = '1.8.0-dev'
   s.version  = version
   s.summary  = 'Core cross-platform gRPC library, written in C'
   s.homepage = 'https://grpc.io'