Update Examples to version 0.2.1 + minor cleanup.

Examples/Datastore/PackageManager/Makefile

@@ -5,4 +5,4 @@ all:
 
 clean :
 	rm -rf Packages googleapis .build
-	rm -f Package.pins Datastore Sources/*.pb.swift Sources/swiftgrpc.log
+	rm -f Package.pins Datastore Sources/*.pb.swift Sources/swiftgrpc.log google.json

Examples/Datastore/PackageManager/Package.swift

@@ -17,7 +17,7 @@ import PackageDescription
 let package = Package (
     name: "Datastore",
     dependencies: [
-        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,0)),
+        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,1)),
         .Package(url: "https://github.com/apple/swift-protobuf.git", Version(0,9,904)),
         .Package(url: "https://github.com/google/auth-library-swift.git", Version(0,2,2)),
     ]

Examples/Echo/PackageManager/Makefile

@@ -5,4 +5,4 @@ all:
 clean :
 	rm -rf Packages
 	rm -rf .build
-	rm -f Package.pins
+	rm -f Package.pins Package.resolved

Examples/Echo/PackageManager/Package.swift

@@ -17,7 +17,7 @@ import PackageDescription
 let package = Package (
     name: "Echo",
     dependencies: [
-        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,0)),
+        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,1)),
         .Package(url: "https://github.com/apple/swift-protobuf.git", Version(0,9,904)),
     ]
 )

Examples/Simple/PackageManager/Makefile

@@ -5,3 +5,4 @@ all:
 clean :
 	rm -rf Packages
 	rm -rf .build
+	rm -rf Package.pins Package.resolved

Examples/Simple/PackageManager/Package.swift

@@ -17,6 +17,6 @@ import PackageDescription
 let package = Package (
     name: "Simple",
     dependencies: [
-        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,0)),
+        .Package(url: "https://github.com/grpc/grpc-swift.git", Version(0,2,1)),
     ]
 )

Makefile

@@ -15,4 +15,4 @@ clean:
 	rm -rf Packages
 	rm -rf .build
 	rm -rf SwiftGRPC.xcodeproj
-	rm -rf Package.pins
+	rm -rf Package.pins Package.resolved