Added fuzzer

scripts/oss-fuzz/.gitignore

@@ -0,0 +1,2 @@
+/.vagrant/
+*.log

scripts/oss-fuzz/Vagrantfile

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+# A virtual machine to run https://github.com/google/oss-fuzz
+Vagrant.configure(2) do |config|
+  config.vm.box = "ubuntu/xenial64"
+
+  config.vm.synced_folder "E:\\Git\\Arduino\\libraries\\ArduinoJson", "/host/ArduinoJson"
+  config.vm.synced_folder "E:\\Git\\oss-fuzz", "/host/oss-fuzz"
+
+  config.vm.network "forwarded_port", guest: 8001, host: 8001
+
+  config.vm.provision "shell", privileged: false, inline: <<-SHELL
+    set -x
+
+    sudo apt-get update
+    sudo apt-get install -y make git docker.io zip
+    sudo groupadd docker
+    sudo usermod -aG docker $USER
+
+    git clone https://github.com/google/fuzzer-test-suite.git FTS
+    ./FTS/tutorial/install-deps.sh  # Get deps
+    ./FTS/tutorial/install-clang.sh # Get fresh clang binaries
+    # Get libFuzzer sources and build it
+    svn co http://llvm.org/svn/llvm-project/llvm/trunk/lib/Fuzzer
+    Fuzzer/build.sh
+    sudo mv libFuzzer.a /usr/local/lib/
+
+    echo "export PROJECT_NAME='arduinojson'" >> $HOME/.profile
+    echo "export CC='clang'" >> $HOME/.profile
+    echo "export CXX='clang++'" >> $HOME/.profile
+  SHELL
+end