Android and MonoTouch build fixes
Merge pull request #294 from JonCanning/master

Android and MonoTouch build fixes
fixed #287:
default behavior is not escaping unicode symbols but could be turned off with: JsConfig.EscapeUnicode = true
added unit tests
Added more WebRequest extensions
Fix WebRequest API names. Added some byte[] overloads
Add contentType to byte[] overloads
Add string overload for posting raw formData
renamed Is300 to more descriptive IsAny300
Add PostJson/PostXml http extensions
Additional common overloads
INCR to v3.9.40
INCR to v3.9.42
Support hyphen-property names in lenient Json Property convention
Add missing requestFilter in SendStringToUrl
missing using for StringComparison enum reference
Merge pull request #297 from RatioClothing/master

Missing Using in .NET 4 build
Define NET40 symbol for release builds too
Merge pull request #298 from RatioClothing/master

NET40 project didn't define constant for release builds
Added Community Resources section
added missing exe files