add support for BasicObject

[aninder]

Doing BasicObject.new , gives this error
Hirb Error: undefined method `respond_to?' for #BasicObject:0x007fa7c4ed23a8

[aninder]

the library is supporting quite a few legacy ruby versions, will have to do a few work arounds to support BasicObject on newer versions.

[aninder]

incompatibilities between ruby 2.3.1(version i have installed on my system) and 1.8.7 i found while solving this issue were,

str=""
str_meta =class << str
self
end

ruby - 2.3.1
1)
has Basic Object

str_meta.superclass == str.class #true

str_meta.ancestors[0] == str.class #false

Object.instance_methods #returns array of symbols

ruby - 1.8.7
1)
does not have BasicObject, it got added in 1.9

str_meta.superclass == str.class #false

str_meta.ancestors[0] == str.class #true

Object.instance_methods #returns array of strings

[aninder]

kudos to the braveheart maintainer who is supporting all these versions.
Not sure if he wants to add in support for BasicObject , but it was a fun exercise !