adding cscope to the list

README.md

@@ -194,6 +194,7 @@ Two Chinese version of this list are available [here](https://github.com/alim0x/
 - [Clion](https://www.jetbrains.com/clion/) - A cross-platform and powerful IDE for C and C++.
 - [Code::Blocks](http://www.codeblocks.org/) - Code::Blocks is a free C, C++ and Fortran IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. ![Freeware][Freeware Icon]
 - [Codelite](http://codelite.org/) - A Free, open source, cross platform C,C++,PHP and Node.js IDE. ![Freeware][Freeware Icon]
+- [Cscope](http://cscope.sourceforge.net/) - Cscope is a developer's tool for browsing source code. Although cmd-line application, it is nativelly integrated with Vim editor.  It allows searching code for symbols, definitions, functions (called/calling), regex, files. [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/cscope/) ![Freeware][Freeware Icon]
 - [DBeaver](http://dbeaver.jkiss.org/) - A universal database client supporting multiple platforms and databases. [![Open-Source Software][OSS Icon]](https://github.com/serge-rider/dbeaver/) ![Freeware][Freeware Icon]
 - [Diffuse](https://sourceforge.net/projects/diffuse/) - Diffuse is a graphical tool for comparing and merging text files. It can retrieve files for comparison from Bazaar, CVS, Darcs, Git, Mercurial, Monotone, RCS, Subversion, and SVK repositories.  [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/diffuse/files/?source=navbar) ![Freeware][Freeware Icon]
 - [Eclipse](https://eclipse.org/ide/) - Eclipse is famous for our Java Integrated Development Environment (IDE), but our C/C++ IDE and PHP IDE are pretty cool too![Freeware][Freeware Icon]