Fixed files copy.
Merge branch 'master' of https://github.com/MongoDBPeru/subte
Translated '01 Introduction to Week 7' into Spanish. Close #374.
Removing Final Exam mapping.
Merge pull request #375 from puentesarrin/issue-374

Translated '01 Introduction to Week 7' into Spanish. Close #374.
Translated '16 Read Preferences' into Spanish. Close #351.
Minor edits for #351.
Merge pull request #376 from puentesarrin/issue-351

Completed translation of "16 Read Preferences" into Spanish. Close #351
Translated 19-Building_a_Sharded_Environment. Resolves #366
Merge branch 'master' of https://github.com/MongoDBPeru/subte
Translated 20-Implications_of_Sharding. Resolves #367
s/implicaciones/repercusiones/g
Translated 21-Sharded_+_Replicated_environments. Resolves #368
Merge branch 'master' of https://github.com/MongoDBPeru/subte
Completed translation of '22 Choosing a Shard Key' into Spanish. Close #377.
Several edits for #377.
Merge pull request #378 from puentesarrin/issue-377

Completed translation of '22 Choosing a Shard Key' into Spanish. Close #377
Moving utils to its own repository.
Initial reorganization.
Updated README.rst