Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -2,16 +2,13 @@
 
 We welcome patches and features. There are however a few things that are
 required before your pull request can be merged. Make sure you cut a branch
-from develop and all PRs pointed towards develop.
+from develop and all PRs pointed towards master.
 
 # Tests
 
 ## How to write a new test case
 
-As output from system ping varied on languages and OS, our parser may fail
-on new languages or OS. To improve the correctness and coverage for this
-module, we need to gather output from those system pings. For any new feature added,
-we expect a new test case. Read up more about why unit testing [here](https://dzone.com/articles/top-8-benefits-of-unit-testing).
+For any new feature added, we expect a new test case. Since the repo has a 100% code coverage, we expect a success case test and a failure case test for each case. Read up more about why unit testing [here](https://dzone.com/articles/top-8-benefits-of-unit-testing).
 
 ## Running test cases