Update src/FSNConnection.m

No empty line / seperator after parameter value. http://www.ietf.org/rfc/rfc1867.txt doesn't specify this newline, and Amazon S3 doesn't support newlines (it's treated as part of the value)
Merge pull request #7 from wardbekker/master

Incorrect empty line before next boundary
Added arrays to [NSDictionary urlQueryString]

Added a block that will verify whether a value is an acceptable class, and
extended [NSDictionary urlQueryString] to support arrays.
added default image to demo to silence xcode warning
silenced warnings for mac demo
added arrayFromJSONWithError convenience method
Xcode 4.6 settings update
remove myself from code signing settings
replaced NSNumber-specific check with cleaner polymorphic call to [val urlEncodedString]
isValueAcceptable is now a plain function with a static array of class objects to avoid excessive allocations for each check
Merge pull request #6 from gwk/master

arrayFromJSONWithError: plus small fixes for Mac
Fixed FSN Issue #10

- FSN_categories.h did not have a [NSArray urlEncodedString] impl.
Merge branch 'master' of https://github.com/foursquare/FSNetworking