Update README.md (#247)
Update README.md (#247)

I very much appreciate FORREST and its concise and very helpful documentation.  I especially appreciate them because I am a relative newbie (in Salesforce, Forrest, Laravel and github).  But there were two things I found confusing in the readme.md and suggest you might want to consider changing.

1) in the "upsert" documentation you show a "+" instead of a "." for string concatenation.  Unless I am mistaken, that should be a "." in PHP

2) in the “query” documentation you show the response in JSON format.  But what is actually being returned by the FORREST function call has already been json_decode.  This confused me initially.  My suggested edits show the actual response returned by FORREST not the JSON encoded response that FORREST handles.

(This is my first submission of a recommended edit in github, so feel free to advise if I have done it incorrectly).
omniphx/forrest