Added arrays

Author: VyacheslavHashov

README.md

@@ -46,6 +46,17 @@ TODO
 ## JSON
 
 ## Array
+```
+word32 - dimension
+word32 - 1 if array has NULL, 0 otherwise
+oid - oid of element type
+for each dimension:
+  word32 - elements in dimension
+  word32 - lower bound
+for each element:
+  word32 - elements length
+  bytes[n] - encoded element
+```
 
 ## Composite