1.0.0 beta 11

What's Changed

• add auth failed msg by @clickingbuttons in #157
• Rename forex to crypto by @Darcy-Linde in #158
• Iterator note by @Darcy-Linde in #159
• vX Usage Note by @Darcy-Linde in #160
• User agent version by @clickingbuttons in #161
• Raise AuthenticationError by @Darcy-Linde in #162
• make websockets have 2 apis by @clickingbuttons in #163
• fix get_ticker_details by @clickingbuttons in #166
• move examples to example dir by @clickingbuttons in #167
• cryptotrade: rename sym to pair by @clickingbuttons in #168

Full Changelog: v1.0.0.beta10...v1.0.0.beta11