Merge pull request #282 from openvenues/faster_windows_build

adding make -j4 to Windows build

.appveyor.yml

@@ -3,6 +3,10 @@ version: 1.0.{build}
 image: Visual Studio 2015
 platform: x64
 
+branches:
+  only:
+    - master
+
 environment:
   matrix:
   - COMPILER: msys2

win_build.bat

@@ -17,7 +17,7 @@ IF %COMPILER%==msys2 (
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && cp -rf windows/* ./"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./bootstrap.sh"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && ./configure --datadir=/c"
-  bash -lc "cd $APPVEYOR_BUILD_FOLDER && make"
+  bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -j4"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && make install"
   bash -lc "cd $APPVEYOR_BUILD_FOLDER && cp src/.libs/libpostal-*.dll libpostal.dll"
   "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\lib.exe" /def:libpostal.def /out:libpostal.lib /machine:x64