docs: make collators actually work (#638)

* docs: make collators actually work

* bump polkadot

* include recent fix for overseer

cumulus/README.md

@@ -120,10 +120,10 @@ cargo build --release
 ./target/release/polkadot-collator export-genesis-wasm > genesis-wasm
 
 # Collator1
-./target/release/polkadot-collator --collator --tmp --parachain-id <parachain_id_u32_type_range> --port 40335 --ws-port 9946 -- --execution wasm --chain ../polkadot/rococo-local-cfde.json --port 30335
+./target/release/polkadot-collator --collator --alice --force-authoring --tmp --parachain-id <parachain_id_u32_type_range> --port 40335 --ws-port 9946 -- --execution wasm --chain ../polkadot/rococo-local-cfde.json --port 30335
 
 # Collator2
-./target/release/polkadot-collator --collator --tmp --parachain-id <parachain_id_u32_type_range> --port 40336 --ws-port 9947 -- --execution wasm --chain ../polkadot/rococo-local-cfde.json --port 30336
+./target/release/polkadot-collator --collator --bob --force-authoring --tmp --parachain-id <parachain_id_u32_type_range> --port 40336 --ws-port 9947 -- --execution wasm --chain ../polkadot/rococo-local-cfde.json --port 30336
 
 # Parachain Full Node 1
 ./target/release/polkadot-collator --tmp --parachain-id <parachain_id_u32_type_range> --port 40337 --ws-port 9948 -- --execution wasm --chain ../polkadot/rococo-local-cfde.json --port 30337