Let's cover ourselves with istanbul

Also includes the fix for #39, albeit with a changed path to the
index file (README updated appropriately)

README.md

@@ -57,7 +57,7 @@ From inside the SolCover directory, run
 
 ```node ./runCoveredTests.js```
 
-Upon completion of the tests, open the `./coverage/index.html` file to browse the HTML coverage report.
+Upon completion of the tests, open the `./coverage/lcov-report/index.html` file to browse the HTML coverage report.
 
 ###A few, uh, provisos, a, a couple of quid pro quos...
 It is very likely that there are valid Solidity statements that this tool won't instrument correctly, as it's only been developed against a small number of contracts. If (and when) you find such cases, please raise an issue.

circle.yml

@@ -5,4 +5,8 @@ dependencies:
   pre:
     - npm install -g truffle
     - rm -rf node_modules/
-    
+test:
+  override:
+    - npm run test-cov
+  post:
+    - bash <(curl -s https://codecov.io/bash)

package.json

@@ -7,7 +7,8 @@
     "test": "test"
   },
   "scripts": {
-    "test": "mocha --timeout 30000"
+    "test": "mocha --timeout 30000",
+    "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --timeout 30000"
   },
   "author": "",
   "license": "ISC",
@@ -24,6 +25,7 @@
     "ethereumjs-account": "~2.0.4",
     "ethereumjs-tx": "1.1.2",
     "ethereumjs-util": "~4.5.0",
+    "istanbul": "^0.4.5",
     "merkle-patricia-tree": "~2.1.2",
     "mocha": "^3.1.0",
     "solc": "0.4.6"

runCoveredTests.js

@@ -53,7 +53,7 @@ coverage.generate(events, './../originalContracts/');
 
 fs.writeFileSync('./coverage.json', JSON.stringify(coverage.coverage));
 
-shell.exec("./node_modules/istanbul/lib/cli.js report html")
+shell.exec("./node_modules/istanbul/lib/cli.js report lcov")
 testrpcProcess.kill();
 shell.rm('-rf', './../contracts');
 shell.mv('./../originalContracts', './../contracts');