hello: fix missing build steps and vague config

Fixes #36.

hello_tutorial/config/config

@@ -1,12 +1,23 @@
 <config>
+	<parent-provides>
+		<service name="CAP"/>
+		<service name="LOG"/>
+		<service name="RM"/>
+		<service name="SIGNAL"/>
+	</parent-provides>
+	<default-route>
+		<any-service> <parent/> <any-child/> </any-service>
+	</default-route>
+
 	<start name="hello_server">
-		<resource name="RAM" quantum="256K"/>
+		<resource name="RAM" quantum="1M"/>
 		<provides><service name="Hello"/></provides>
 	</start>
 	<start name="timer">
-		<resource name="RAM" quantum="256K"/>
+		<resource name="RAM" quantum="1M"/>
+		<provides><service name="Timer"/></provides>
 	</start>
 	<start name="hello_client">
-		<resource name="RAM" quantum="256K"/>
+		<resource name="RAM" quantum="1M"/>
 	</start>
 </config>

hello_tutorial/doc/hello_tutorial.txt

@@ -269,7 +269,7 @@ entry to init's 'config' file, which is located at 'build/bin/config'.
 For information about the configuring the init process, please refer
 to [http://genode.org/documentation/developer-resources/init].
 
-Now rebuild 'hello/server', go to 'build/bin', run './core'.
+Now rebuild 'core', 'init', and 'hello/server', go to 'build/bin', run './core'.
 
 
 Writing client code
@@ -411,7 +411,8 @@ Extend your 'config' file as follows.
 # Add start entries for 'Timer' service and hello client:
 
   ! <start name="timer">
-  !   <resource name="RAM" quantum="512K"/>
+  !   <resource name="RAM" quantum="1M"/>
+  !   <provides><service name="Timer"/></provides>
   ! </start>
   ! <start name="hello_client">
   !   <resource name="RAM" quantum="1M"/>

hello_tutorial/run/hello.run

@@ -16,14 +16,20 @@ install_config {
 		<service name="CAP"/>
 		<service name="LOG"/>
 		<service name="RM"/>
+		<service name="SIGNAL"/>
 	</parent-provides>
 	<default-route>
 		<any-service> <parent/> <any-child/> </any-service>
 	</default-route>
+
 	<start name="hello_server">
 		<resource name="RAM" quantum="1M"/>
 		<provides><service name="Hello"/></provides>
 	</start>
+	<start name="timer">
+		<resource name="RAM" quantum="1M"/>
+		<provides><service name="Timer"/></provides>
+	</start>
 	<start name="hello_client">
 		<resource name="RAM" quantum="1M"/>
 	</start>