Add method to remove pronouns and articles

[alexandrebarbaruiva]

New Feature Submissions:

To run tests locally, use make if you're on Mac or Linux.

1. [X] Does your submission pass all the tests?
2. [X] Have you lint your code locally prior to submission?
3. [X] Have you written proper tests to your added code?

New Dialog Submissions:

User messages have - -, bot messages have -

1. [ ] Does all your user messages have lower letters?
2. [ ] Have you lint your dialogs locally prior to submission?
3. [ ] Have you written proper tests to your added dialogs on test_dialogs?
4. [ ] Does your dialog have an existing category? If not, did you create it?

Changes to Core Features:

• [ ] Have you added an explanation of what your changes do and why you'd like us to include them?
• [ ] Have you written new tests or modified old ones for your core changes, as applicable?
• [ ] Have you successfully ran tests with your changes locally?

[codeclimate[bot]]

Code Climate has analyzed commit d6d88573 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (80% is the threshold).

This pull request will bring the total coverage in the repository to 83.5% (3.0% change).

View more on Code Climate.

[codecov[bot]]

Codecov Report

Merging #33 into master will increase coverage by 3.01%. The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #33      +/-   ##
=========================================
+ Coverage   80.48%   83.5%   +3.01%     
=========================================
  Files           2       2              
  Lines          82      97      +15     
  Branches        1       4       +3     
=========================================
+ Hits           66      81      +15     
  Misses         16      16

Impacted Files	Coverage Δ
bot/communication.py	100% <100%> (ø)	:arrow_up:

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