Readme - update ides, add note about progen replacement

Author: 0xc0170

README.md

@@ -104,13 +104,18 @@ Atmel:
 
 Supported Toolchains and IDEs
 -----------------------------
-* GCC ARM: [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded/4.7/4.7-2012-q4-major)
+* GCC ARM: [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded/+milestone/4.9-2015-q3-update)
 * ARMCC (standard library and MicroLib): [uVision](http://www.keil.com/uvision/)
 * IAR: [IAR Embedded Workbench](http://www.iar.com/en/Products/IAR-Embedded-Workbench/ARM/)
 * GCC code_red: [Red Suite](http://www.code-red-tech.com/)
 * GCC CodeSourcery: [Sourcery CodeBench](http://www.mentor.com/embedded-software/codesourcery)
 * GCC ARM: [Em::Blocks](http://www.emblocks.org/web/)
 * GCC ARM: [CooCox CoIDE](http://www.coocox.org/)
+* GCC ARM: [NXP Knetis Design Studio](http://www.nxp.com/products/software-and-tools/run-time-software/kinetis-software-and-tools/ides-for-kinetis-mcus/kinetis-design-studio-integrated-development-environment-ide:KDS_IDE)
+* GCC ARM: [OpenSTM32](http://www.openstm32.org)
+* GCC ARM: [Atmel Studio 6](http://www.atmel.com/Microsite/atmel-studio)
+
+The current mbed exporters scripts (IDE support) will be replaced by [Project generator (=progen)](https://github.com/project-generator/project_generator). Any new IDEs support, should be implemented using progen API - add IDE to progen, use progen API to generate a mbed project.
 
 API Documentation
 -----------------