More example contracts and tmux for testing. (#112)

examples/7nodes/contracts/README.md

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+## Testing Contract Playground
+
+## Connecting to multiple nodes
+* run tmux script which by default connects to nodes 1, 2, and 7.
+
+```
+$> ./tmux_connect_to_nodes.sh
+
+# to kill the tmux session run
+$> tmux kill-session -t quorum
+```
+
+# Creating Contracts 
+```
+$> cd quorum-examples/examples/7nodes
+$> ./runscript.sh contracts/simple-event/private-contract-events.js
+
+
+```
+
+# Testing Multiple Transactions
+* Obtain the address of the contract that was deployed.
+* set that address in the test scripts
+  `var address="0x1932c48b2bf8102ba33b4a6b545c32236e342f34"`
+
+```
+$> cd quorum-examples/examples/7nodes
+$> ./runscript.sh contracts/simple-event/private-generate-events.js
+```
+

examples/7nodes/contracts/simple-event/private-generate-events.js

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+// From the console test nodes 1 & 7 to see if the events were recorded
+// seth is a cool cli tool that can be used see: https://github.com/dapphub/dapptools
+//   $> seth events 0x1932c48b2bf8102ba33b4a6b545c32236e342f34 | wc -l
+var address="0x1932c48b2bf8102ba33b4a6b545c32236e342f34"
+
+// simple contract
+var abi = [{"constant":true,"inputs":[],"name":"storedData","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"x","type":"uint256"}],"name":"set","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"retVal","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"initVal","type":"uint256"}],"payable":false,"type":"constructor"}];
+var contract = eth.contract(abi).at(address)
+
+for ( i = 0; i < 20; i++) {
+  contract.set(4,{from:eth.accounts[0], privateFor:["ROAZBWtSacxXQrOe3FGAqJDyJjFePR5ce4TSIzmJ0Bc="]});
+} 

examples/7nodes/contracts/simple-event/public-generate-events.js

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+// From console test node 1 & 7 to see if the events were recorded
+// seth is a cool CLI (but you can use whatever you'd like): https://github.com/dapphub/dapptools
+//   $> seth events 0x1932c48b2bf8102ba33b4a6b545c32236e342f34 | wc -l
+
+// NOTE: replace this with the address of the contract you wish to generate
+//       events for.
+var address="0x1932c48b2bf8102ba33b4a6b545c32236e342f34"
+
+// simple contract
+var abi = [{"constant":true,"inputs":[],"name":"storedData","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"x","type":"uint256"}],"name":"set","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"get","outputs":[{"name":"retVal","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"initVal","type":"uint256"}],"payable":false,"type":"constructor"}];
+var contract = eth.contract(abi).at(address)
+
+for ( i = 0; i < 20; i++) {
+  contract.set(4,{from:eth.accounts[0]});
+}

examples/7nodes/contracts/tmux_connect_to_nodes.sh

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+#!/bin/bash
+
+set -x
+
+# example usage:
+# $> ./tmux_connect_to_nodes.sh
+
+tmux new -s quorum 'geth attach ../qdata/dd1/geth.ipc' \; \
+splitw -h -p 50 "geth attach ../qdata/dd7/geth.ipc; bash" \; \
+splitw -v -p 50 "geth attach ../qdata/dd2/geth.ipc; bash" \;
+
+# To stop the session run:
+# $> tmux kill-session -t quorum