Some small change.

Update README.md for VS 2015.
remove sln buildbot
remove unused appveyor config
remove package.bat, no longer current, now found in bigpet/rpcs3-buildbot-tools

appveyor.yml

@@ -1,56 +0,0 @@
-
-
-# version format
-version: 0.1.{build}
-
-branches:
-  only:
-    - appveyorbuild
-  # blacklist
-  #except:
-  #  - gh-pages
-
-#---------------------------------#
-#    environment configuration    #
-#---------------------------------#
-
-# clone directory
-clone_folder: c:\projects\rpcs3
-
-platform:
-  - x64
-
-configuration:
-  - Release
-
-install:
-  - cmd: cinst wget -x86
-  - cmd: cinst 7zip.commandline -x86
-  - cmd: git submodule update --init --recursive .\ffmpeg .\asmjit
-  - cmd: wget -q --no-check-certificate https://googledrive.com/host/0B3tDmChwjRbRTTdhaTFOeGN1eEU/wxWidgets.7z -O c:\projects\rpcs3\wxwidgets.7z
-  - cmd: 7z x C:\projects\rpcs3\wxwidgets.7z -oc:\projects\rpcs3\wxWidgets
-  
-build:
-
-build_script:
-  - msbuild /m /p:Configuration=Release rpcs3_buildbot.sln
-  
-after_build:
-  - cmd: package.bat
-
-artifacts:
-  - path: .\rpcs3*.7z
-
-deploy: OFF
-#  - provider: FTP
-#    server: 
-#      secure: kZT7rsbEPGQ0fC2GFRBGfL2vPwUgih2JkwjbSuw00T8=
-#    username:
-#      secure: YJzwsi4wfSezFLqaB9uiww==
-#    password:
-#      secure: EQ3xa2LoRgelAdE57+qakQ==
-#    folder: .\rpcs3\
-#    enable_ssl: false
-  
-test: OFF
-