feat(@embark/dapps): Add blockchain config to simple template

Add blockchain config to simple template, and supporting files (ie passwords, genesis) that aid in examples set forth in the blockchain config.

dapps/templates/simple/config/blockchain.js

@@ -0,0 +1,79 @@
+// This file contains only the basic configuration you need to run Embark's node
+// For additional configurations, see: https://framework.embarklabs.io/docs/blockchain_configuration.html
+module.exports = {
+  // default applies to all environments
+  default: {
+    enabled: true,
+    client: "geth" // Can be ganache-cli, geth or parity (default: geth)
+  },
+
+  development: {
+    client: 'ganache-cli',
+    clientConfig: {
+      miningMode: 'dev' // Mode in which the node mines. Options: dev, auto, always, off
+    }
+  },
+
+  privatenet: {
+    // Accounts to use as node accounts
+    // The order here corresponds to the order of `web3.eth.getAccounts`, so the first one is the `defaultAccount`
+    // For more account configurations, see: https://framework.embarklabs.io/docs/blockchain_accounts_configuration.html
+    accounts: [
+      {
+        nodeAccounts: true, // Accounts use for the node
+        numAddresses: "1", // Number of addresses/accounts (defaults to 1)
+        password: "config/development/password" // Password file for the accounts
+      }
+    ],
+    clientConfig: {
+      datadir: ".embark/privatenet/datadir", // Data directory for the databases and keystore
+      miningMode: 'auto',
+      genesisBlock: "config/privatenet/genesis.json" // Genesis block to initiate on first creation of a development node
+    }
+  },
+
+  privateparitynet: {
+    client: "parity",
+    genesisBlock: "config/privatenet/genesis-parity.json",
+    datadir: ".embark/privatenet/datadir",
+    miningMode: 'off'
+  },
+
+  externalnode: {
+    endpoint: "URL_OF_THE_NODE", // Endpoint of an node to connect to. Can be on localhost or on the internet
+    accounts: [
+      {
+        mnemonic: "YOUR_MNEMONIC",
+        hdpath: "m/44'/60'/0'/0/",
+        numAddresses: "1"
+      }
+    ]
+  },
+
+  testnet: {
+    networkType: "testnet", // Can be: testnet(ropsten), rinkeby, livenet or custom, in which case, it will use the specified networkId
+    syncMode: "light",
+    accounts: [
+      {
+        nodeAccounts: true,
+        password: "config/testnet/password"
+      }
+    ]
+  },
+
+  livenet: {
+    networkType: "livenet",
+    syncMode: "light",
+    accounts: [
+      {
+        nodeAccounts: true,
+        password: "config/livenet/password"
+      }
+    ]
+  }
+
+  // you can name an environment with specific settings and then specify with
+  // "embark run custom_name" or "embark blockchain custom_name"
+  //custom_name: {
+  //}
+};

dapps/templates/simple/config/development/password

@@ -0,0 +1 @@
+dev_password

dapps/templates/simple/config/privatenet/genesis.json

@@ -0,0 +1,20 @@
+{
+    "config": {
+      "homesteadBlock": 0,
+      "byzantiumBlock": 0,
+      "eip155Block": 0,
+      "eip158Block": 0,
+      "daoForkSupport": true
+    },
+    "nonce": "0x0000000000000042",
+    "difficulty": "0x0",
+    "alloc": {
+        "0x3333333333333333333333333333333333333333": {"balance": "15000000000000000000"}
+    },
+    "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "coinbase": "0x3333333333333333333333333333333333333333",
+    "timestamp": "0x00",
+    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+    "extraData": "0x",
+    "gasLimit": "0x7a1200"
+}

dapps/templates/simple/config/privatenet/password

@@ -0,0 +1 @@
+dev_password

dapps/templates/simple/config/testnet/password

@@ -0,0 +1 @@
+test_password

dapps/templates/simple/embark.json

@@ -1,10 +1,12 @@
 {
-  "contracts": ["contracts/**"],
+  "contracts": [
+    "contracts/**"
+  ],
   "app": {},
   "buildDir": "build/",
   "config": {
-    "contracts": "contracts.js",
-    "blockchain": false,
+    "contracts": "config/contracts.js",
+    "blockchain": "config/blockchain.js",
     "storage": false,
     "communication": false,
     "webserver": false

dapps/templates/simple/package.json

@@ -5,8 +5,8 @@
   "homepage": "https://github.com/embarklabs/embark/tree/master/dapps/templates/simple#readme",
   "bugs": "https://github.com/embarklabs/embark/issues",
   "files": [
+    "config/*",
     "contracts",
-    "contracts.js",
     "dot.gitignore",
     "dot.npmrc",
     "embark.json",