Translation of '18-Mongo_shell_counting_results' into Spanish. Fix #103.
Minor edits for #103.
Another ninor edit for #103.
Merge pull request #213 from puentesarrin/issue-103

Translation of '18-Mongo_shell_counting_results' into Spanish. Fix #103.
Translated
Merge pull request #216 from jcarlosgarcia/mongo-shell-in-all

Completed translation of "15-Mongo_shell_$in_and_$all" parts a and b. Resolves #100