Switch to PlatformIO's SCons version

docs/ci/appveyor.rst

@@ -134,7 +134,7 @@ same for the all projects, don't need to modify them):
     function InstallScons ($python_home) {
         Write-Host "Start installing Scons"
         $pip_path = $python_home + "/Scripts/pip.exe"
-        & $pip_path install --egg "http://sourceforge.net/projects/scons/files/latest/download"
+        & $pip_path install --egg "http://dl.platformio.org/scons.zip"
         Write-Host "Scons installed"
     }
 

scripts/get-platformio.py

@@ -100,9 +100,7 @@ def main():
         ("Installing Python Package Manager", install_pip, []),
         ("Installing PlatformIO and dependencies", install_pypi_packages, [
             [["setuptools"], ["platformio"], [
-                "--egg",
+                "--egg", "http://dl.platformio.org/scons.zip"
-                "http://sourceforge.net/projects/platformio-storage/files/"
-                "scons.zip/download"
             ]]
         ])
     ]

tox.ini

@@ -11,7 +11,7 @@ deps =
     isort
     flake8
 commands =
-    pip install --egg http://sourceforge.net/projects/platformio-storage/files/scons.zip/download
+    pip install --egg http://dl.platformio.org/scons.zip
 
 [testenv:docs]
 basepython = python2.7
@@ -48,5 +48,5 @@ passenv = *
 deps = pytest
 commands =
     {envpython} --version
-    pip install --egg http://sourceforge.net/projects/platformio-storage/files/scons.zip/download
+    pip install --egg http://dl.platformio.org/scons.zip
     py.test -v --basetemp="{envtmpdir}" tests