iOS Plist Configuration

/* sample plist data
<key>SNFConfig</key>
<string>SNFDebugImac</string>

<key>SNFDebugImac</key>
<dict>
    <key>TwitterKey</key>
    <string>XXX</string>
    <key>TwitterSecret</key>
    <string>XXX</string>
    <key>apiPath</key>
    <string>api</string>
    <key>serverURL</key>
    <string>http://imac.local:8000</string>
</dict>
<key>SNFDebugLocal</key>
<dict>
    <key>TwitterKey</key>
    <string>XXX</string>
    <key>TwitterSecret</key>
    <string>XXX</string>
    <key>apiPath</key>
    <string>api</string>
    <key>serverURL</key>
    <string>http://127.0.0.1:8000</string>
</dict>
<key>SNFServices</key>
<dict>
    <key>TwitterKey</key>
    <string>XXX</string>
    <key>TwitterSecret</key>
    <string>XXX</string>
    <key>apiPath</key>
    <string>api</string>
    <key>serverURL</key>
    <string>https://whatever.com</string>
</dict>
*/

//sample getting something based on SNFConfig key.
//this is easy to wrap in a class and create accessor methods for as well
NSDictionary * info = [[NSBundle mainBundle] infoDictionary];
NSString * config = info[@"SNFConfig"];
NSString * configInfo = info[config];
NSString * twitterKey = configInfo[@"TwitterKey"];