Update README.md for issue #82 Hebrew translation

Add the link to the issue and file in the main README file. 
Add the file README-he.md to repository, the translation of first pages

README.md

@@ -4,6 +4,8 @@ Translations:
 - [中文版本](README-cn.md)
 - [Español (in progress)](README-es.md) [Issue #80](https://github.com/jwasham/google-interview-university/issues/80)
 - हिन्दी (in progress) [Issue #81](https://github.com/jwasham/google-interview-university/issues/81)
+- [עברית (in progress)](README-he.md) [Issue #82] (https://github.com/jwasham/google-interview-university/issues/82)
+
 
 ## What is it?