[Fixed #121] Correctly creating issue include parameters
[Fixed #121] Correctly creating issue include parameters

API builds a request using the `http_build_query` method. The output would be:

    /issues/<id>.json?include[0]=attachments&include[1]=children

Where as the redmine API requires this format:

    /issues/<id>.json?include=attachments,children

airmoi/php-redmine-api,Kijubei/php-redmine-api,ferdynator/php-redmine-api,ArchangelDesign/RedmineAdmin,kbsali/php-redmine-api,leominov/php-redmine-api,happy-code-com/php-redmine-api,abordin/php-redmine-api,arlin2050/php-redmine-api