Ignoring common level for examples

[Andrew Abramov]

Sources:

block.examples/
├── blocks/                   # common level for all examples
├── 10-simple.blocks/         # specific level for `10-simple` example
├── 10-simple.bemjson.js
├── 10-simple.title.txt
├── 20-complex.bemjson.js
└── 20-complex.title.txt

If build all examples of block then will get correct result.

$ magic make desktop.exaples/block/

desktop.examples
└── block/
     ├── .blocks/             # common level for all examples
     ├── 10-simple/
         ├── blocks/          # specific level for `10-simple` example
         └── 10-simple.bemjson.js.symlink
     └── 20-complex/
          └── 20-comples.bemjson.js.symlink

But, If build one example of block then common level will not created.

$ magic make desktop.exaples/block/10-simple/

desktop.examples
└── block/
     └── 10-simple/
         ├── blocks/          # specific level for `10-simple` example
         └── 10-simple.bemjson.js.symlink

[Evgeniy Gavryushin]

Это issue, кажется, уже можно закрыть через #27