fixed first error in about_objects.rb

* pivotal tracker id [#75411404]
* learned that 1 is an object
finished the first task of about_objects:

* pivotal tracker id [#75411404]
* learned that everything in ruby is an object
completed stage 2 of about_objects.rb

* pivotal tracker id [#75411404]
* I learned that nil.to_s returns the empty string
completed stage 3 of about_objects.rb

* pivotal tracker id [#75411404]
* learned that nil.inspect returns 'nil'
completed stage 4 of about_objects.rb

* pivotal tracker id [#75411404]
* learned that every object has an id number, that is type Fixnum
completed stage 5 of about_objects.rb

* pivotal tracker id [#75411404]
* no two objects have the same id
completed stage 6 of about_objects.rb

* pivotal tracker id [#75411404]
* the whole numbers have fixed id's, namely the odd numbers. strange
completed all stages of about_objects.rb

* pivotal tracker id [#75411404]
* learned that you can clone objects, but it creates a
new object with a different id
Merge pull request #3 from glassbead0/75411404_about_objects_master

about objects master

[Delivers #75411404]
Update about_arrays.rb
Update about_arrays.rb
Completed the first task of about_arrays.rb

* Pivotal Traker Id [#75411406]
* learned that an empty array is still in the class Array
* learend that the size of an empty array is 0
Completed task 2 of about_arrays.rb

* pivotal tracker id [#75411406]
* learned about array literals
* remembered that the << operator appends an element to an array. Horray!
completed task 3 of about_arrays.rb

* pivotal tracker id {#75411406}
* learned about accesing array elements by index
* arrays have a 0 based index
* negative indices count backwards from the end of the array
completed stage 4 of about_arrays.rb

* pivotal tracker id [#75411406]
* learned about slicing arrays
* arr[a,b] slices the array starting at index a and contain b elements
completed stage 5 of about_arrays.rb

* pivotal tracker id [#75411406]
* learned the difference between arrays and ranges
* ranges can be turned into arrays with .to_a
* (1..5) is different than (1...5)
* three dots will not include the last element (5)
completed stage 6 of about_arrays.rb

* pivotal tracker id [#75411406]
* learned how to slice an array with a range
* array[a..b] will slice the array from index a to index b
completed stage 7 of about_arrays.rb

* pivotal tracker id [#75411406]
* learned that .push(element) will append element to the array
* learned that .pop will return the last element of the array
* .pop will also permanantely remove the last element from the array
Completed all stages (8/8) of about_arrays.rb

* pivotal tracker id [#75411406]
* learned the shift and unshift are like pop and push
* but they operate on the first element of an array, not the last