no-AOT docs & samples

[ikitommi]

• write to README how to handle AOT.
• update examples so that they don't AOT too eagerly
• see java.lang.RuntimeException: Method code too large! #153, method code too large #135 & Namespace conflict with Schema #129 (comment)

[swr1bm86]

but currently the example path is just a whole project if i want add an example project to show how to use aot where should i put it

[ikitommi]

consumed by #329