chore(examples): upate parallel test examples

README.md

@@ -605,6 +605,7 @@ Pact tests are inherently stateful, as we need to keep track of the interactions
 
 The good news is, parallel test execution is possible, you need to ensure that:
 
+1. Before any test run invocation, you remove any existing pact files (otherwise you end up with invalid interactions left over from previous test runs)
 1. Each test is fully self-contained, with its own mock server on its own port
 1. You set the option `pactfileWriteMode` to `"merge"`, instructing Pact to merge any pact documents with the same consumer and provider pairing at the end of all test runs.
 

examples/ava/package.json

@@ -4,7 +4,7 @@
   "description": "Ava Pact example",
   "main": "index.js",
   "scripts": {
-    "test": "ava"
+    "test": "if [ -d 'pacts' ]; then rm -rf pacts; fi && ava"
   },
   "license": "MIT",
   "devDependencies": {

examples/mocha/package.json

@@ -4,7 +4,7 @@
   "description": "Mocha Pact example",
   "main": "index.js",
   "scripts": {
-    "test": "mocha-parallel-tests"
+    "test": "if [ -d 'pacts' ]; then rm -rf pacts; fi && mocha-parallel-tests"
   },
   "license": "MIT",
   "devDependencies": {