Basic codecov config (#187)

* codecov excludes

* path exclusion

.github/codecov.yml

@@ -0,0 +1,12 @@
+codecov:
+  precision: 2
+  round: nearest
+  range: "80...100"
+  require_ci_to_pass: yes
+  notify:
+    after_n_builds: 2
+    wait_for_ci: yes
+  ignore:
+    - doc/**/*
+    - util/**/*
+    - example/**/*

README.md

@@ -4,6 +4,7 @@
 [![license Apache 2](https://img.shields.io/badge/license-Apache%202-black)](https://github.com/TBD54566975/ssi-sdk/blob/main/LICENSE)
 [![issues](https://img.shields.io/github/issues/TBD54566975/ssi-sdk)](https://github.com/TBD54566975/ssi-sdk/issues)
 ![ssi-sdk-ci status](https://github.com/TBD54566975/ssi-sdk/workflows/ssi-sdk-ci/badge.svg?branch=main&event=push)
+[![codecov](https://codecov.io/gh/TBD54566975/ssi-sdk/branch/main/graph/badge.svg?token=8SD0TO9Z9E)](https://codecov.io/gh/TBD54566975/ssi-sdk)
 
 # ssi-sdk
 

did/key.go

@@ -144,7 +144,7 @@ func (d DIDKey) Decode() ([]byte, cryptosuite.LDKeyType, error) {
 	}
 }
 
-// Expand turns the DID key into a complaint DID Document
+// Expand turns the DID key into a compliant DID Document
 func (d DIDKey) Expand() (*DIDDocument, error) {
 	keyReference := "#" + d.Parse()
 	id := string(d)