Added README.md

- Added README.md with the screenshots

README.md

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+# PlayStation emulator
+
+Investigation of console's emulation, writing emulator on C++ language.
+The emulator contains several modules that are needed to successfully run BIOS
+or PS logo screen if disc is present.
+
+Currently performance is poor, the goal of the project is to investigate how PS1 emulation
+should work. Run the code in release mode.
+
+## Implemented
+
+![PlayStation Boot Screen](https://github.com/oaleshina/pscx_emulator/playstation_boot_screen.png)
+
+* CPU
+* Instruction Cache
+* Interrupts
+* DMA
+* Basic GPU ( without textures support )
+* Basic GTE support ( several instructions, not all implemented yet )
+* Timers ( incomplete )
+* CDROM controller ( not all instructions are implemented yet )
+* Gamepad controller ( haven't tested yet )
+
+## TODO ( Scheduled to implement )
+
+* GPU additional instructions
+* MDEC
+* SPU
+* Other things
+
+## Build
+
+Visual studio 2017 C++11/14. Run code in release mode, as C++ containers were used.
+
+## Run
+
+To run the emulator, you should provide the BIOS binary file. Currently emulator works with SCPH1001 one.
+
+![PlayStation Bios Screen](https://github.com/oaleshina/pscx_emulator/playstation_bios_screen.png)
+
+Command line:
+
+```
+pscx_emulator.exe [path to the SCPH1001 BIOS] 
+```
+
+![PlayStation Logo Screen](https://github.com/oaleshina/pscx_emulator/playstation_logo_screen.png)
+
+To run the game you should use such command line:
+
+```
+pscx_emulator.exe [path to the SCPH1001 BIOS] -disc [path to the disc]
+```
+
+Currently the PS logo should be rendered without game launching.