Update README.md

Author: cgewecke

README.md

@@ -16,22 +16,25 @@ find discrepancies between the coverage report and your suite's behavior, please
 
 ### Install
 ```
-$ npm install --save-dev solidity-coverage         // Post-Byzantium fork, testrpc >= 6.0.1
+$ npm install --save-dev solidity-coverage         // Testrpc >= 6.0.1, pragma >= 0.5.0
+
+$ npm install --save-dev [email protected]   // Testrpc >= 6.0.1, pragma < 0.5.0 
 
 $ npm install --save-dev [email protected]   // Pre-Byzantium fork, testrpc ~ 4.0.0
 ```
 
-**Important:** `v0.4.0` targets `solidity >= pragma 0.4.18` and introduces a breaking
+**Important:** `v0.4.0` targets `solidity >= pragma 0.5.0` and (temporarily) introduces a breaking
 change for projects that rely on Truffle's simplified contract method interface. All `constant`
-`view` or `pure` methods now need to be explicitly invoked using `.call`. e.g:
+`view` or `pure` methods will need to be explicitly invoked using `.call`. e.g:
 ```
 myMethod.getViewValue(param)        // Old way
 myMethod.getViewValue.call(param)   // New way
 ```
 Methods invoked the old way will return a transaction object instead of a value when run under coverage.
 See [issue #146](https://github.com/sc-forks/solidity-coverage/issues/146#issuecomment-342781441) for a more
 detailed explanation. `0.3.5` is an intermediate release that contains the Byzantium
-fork upgrade but does not require other code changes as long as your pragma is `<= 0.4.17`.
+fork upgrade but does not require other code changes as long as your pragma is `<= 0.4.17` and you invoke `pure`
+methods using the `.call` postfix.
 
 ### Run
 ```