update readme adding contributing

CONTRIBUTING.md

@@ -0,0 +1,49 @@
+# Contributing
+
+Thanks for taking a look at go-i2p!  Please reach out if you have any questions or need help getting started.
+
+## Getting Starting
+
+Fork go-i2p and clone it into your workspace.  Make sure you can execute `go test ./...` in the project's root directory.  At that point you should have everything you need to start making changes and opening pull requests.
+
+## I2P Specifications
+
+The I2P community maintains up-to-date [specifications](https://geti2p.net/spec) of most of the application, which are being used to create go-i2p.  Currently, most the of common data structures (located in `lib/common/`) have been implemented and tested, and serve as a good examples.
+
+## Testing
+
+`go test ./...`
+
+## Conventions
+
+### Logging
+
+Logrus is used for logging across all of go-i2p.  All log statements should contain an `at` fields and a `reason` field.  Here is a good example from the go-i2p implementation of a LeaseSet:
+
+```go
+log.WithFields(log.Fields(
+	"at":		"(LeaseSet) PublicKey",
+	"data_len":	remainer_len,
+	"required_len":	LEASE_SET_PUBKEY_SIZE,
+	"reason":	"not enough data",
+)).Error("error parsing public key")
+```
+
+### Testing
+
+Testify is used to assert test cases in all tests in go-i2p for simplicity.  Here is an example from the RouterInfo tests:
+
+```go
+func TestRouterAddressCountReturnsCorrectCount(t *testing.T) {
+	assert := assert.New(t)
+
+	router_info := buildFullRouterInfo()
+	count, err := router_info.RouterAddressCount()
+	assert.Nil(err)
+	assert.Equal(1, count, "RouterInfo.RouterAddressCount() did not return correct count")
+}
+```
+
+## Pull Requests
+
+Pull requests should pass all tests, test all new behavior, and be correctly formatted by `gofmt` before merge.  Feel free to open incomplete pull requests if you are struggling, I will enthusiasticlly help you complete the PR in any way needed.

README.md

@@ -8,7 +8,7 @@ go-i2p is in early development.
 
 ## Contributing
 
-
+See CONTRIBUTING.md for more information.
 
 ## License