Add README

README.md

@@ -0,0 +1,56 @@
+#SolCover
+
+###Installation and preparation
+
+From your truffle directory, clone this repo:
+```
+git clone http://github.com/area/solcover.git
+cd solcover
+npm install
+```
+
+Until [Truffle allows the `--network` flag for the `test` command](https://github.com/ConsenSys/truffle/issues/239), in `truffle.js` you have to set a large gas amount for deployment. While this is set, uninstrumented tests likely won't run correctly, so this should only be set when running the coverage tests. An appropriately modified `truffle.js` might look like
+
+```
+module.exports = {
+  rpc: {
+    host: 'localhost',
+    gasPrice: 20e9,
+    gas: 0xfffffff,
+  }
+ };
+```
+In the future, hopefully just adding the 'coverage' network to `truffle.js` will be enough. This will look like
+
+```
+module.exports = {
+  rpc: {
+    host: 'localhost',
+    gasPrice: 20e9,
+  },
+  networks:{
+    "coverage":{
+    	gas: 0xfffffff,
+    }
+  }
+}
+```
+and will not interfere with normal `truffle test` - or other commands - being run during development.
+
+
+###Execution
+
+Firstly, make sure that your contracts in your truffle directory are saved elsewhere too - this script moves them and modifies them to do the instrumentation and allow `truffle` to run the tests with the instrumented contracts. It returns them after the tests are complete, but if something goes wrong, then `originalContracts` in the truffle directory should contain the unmodified contracts.
+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.
+
+###TODO
+
+- [ ] Turn into a true command line tool, rather than just a hacked-together script
+- [ ] Release on NPM 
+- [ ] Do not modify the `../contract/` directory at all during operation (might need changes to truffle)
+- [ ] Support for arbitrary testing commands
+- [ ] [You tell me](http://github.com/area/solcover/issues)