Contracts: Implement Arbitrable (#1)

* Add Arbitrable contract

* Minor fixes to contract

Address PR #1 comments.

* Change error message

Address PR #1 comments.

* Add method to change owner

.eslintrc

@@ -0,0 +1,26 @@
+{
+  "env": {
+    "node": true,
+    "mocha": true
+  },
+  "globals": {
+    "artifacts": "readonly",
+    "assert": "readonly",
+    "contract": "readonly",
+    "web3": "readonly"
+  },
+  "extends": ["standard"],
+  "plugins": ["unused-imports"],
+  "rules": {
+    "semi": "error",
+    "one-var": "off",
+    "key-spacing": "off",
+    "no-var": "error",
+    "no-multi-spaces": "off",
+    "no-return-assign": "off",
+    "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
+    "unused-imports/no-unused-imports": "error",
+    "linebreak-style": ["error", "unix"],
+    "space-before-function-paren": ["error", { "anonymous": "always", "named": "never", "asyncArrow": "always" }],
+  }
+}

.gitattributes

@@ -0,0 +1 @@
+*.sol linguist-language=Solidity

.gitignore

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+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# Dependencies
+node_modules/
+package-lock.json
+
+# Production
+build/
+abi/
+
+# coverage
+coverage/
+coverageEnv/
+coverage.json
+allFiredEvents
+scTopics
+
+# Logs
+yarn-debug.log*
+yarn-error.log*
+
+# Editors
+.vscode/
+.idea/*
+
+# Misc
+.DS_Store
+
+bytecode

.solcover.js

@@ -0,0 +1,12 @@
+const skipFiles = [
+  'lib',
+  'test',
+  'standards'
+]
+
+module.exports = {
+    norpc: true,
+    compileCommand: '../node_modules/.bin/truffle compile',
+    testCommand: 'node --max-old-space-size=4096 ../node_modules/.bin/truffle test --network coverage',
+    skipFiles,
+}

.soliumignore

@@ -0,0 +1,2 @@
+node_modules
+contracts/test

.soliumrc.json

@@ -0,0 +1,40 @@
+{
+  "extends": "solium:all",
+  "plugins": ["security"],
+  "rules": {
+    "security/no-low-level-calls": "off",
+    "security/no-inline-assembly": "off",
+    "imports-on-top": "error",
+    "variable-declarations": "error",
+    "array-declarations": "error",
+    "operator-whitespace": "error",
+    "conditionals-whitespace": "error",
+    "comma-whitespace": "error",
+    "semicolon-whitespace": "error",
+    "function-whitespace": "error",
+    "lbrace": "error",
+    "mixedcase": "error",
+    "camelcase": "error",
+    "uppercase": "error",
+    "no-empty-blocks": "error",
+    "no-unused-vars": "error",
+    "quotes": ["error", "double"],
+    "blank-lines": "error",
+    "indentation": ["error", 4],
+    "arg-overflow": ["error", 8],
+    "whitespace": "error",
+    "deprecated-suicide": "error",
+    "pragma-on-top": "error",
+    "function-order": "error",
+    "emit": "error",
+    "no-constant": "error",
+    "value-in-payable": "error",
+    "no-experimental": "off",
+    "max-len": ["error", 145],
+    "error-reason": "error",
+    "visibility-first": "error",
+    "linebreak-style": "error",
+    "constructor": "error",
+    "no-trailing-whitespace": "error"
+  }
+}