Graphitepager

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- Drop python 2.6 support. [Jose Diaz-Gonzalez]

- Remove unused variable. [Jose Diaz-Gonzalez]

- Fix pep8. [Jose Diaz-Gonzalez]

- Fix travis testing. [Jose Diaz-Gonzalez]

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- Skip alerting when allow_no_data is set to true. [Jose Diaz-Gonzalez]

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- Skip empty targets. [Jose Diaz-Gonzalez]

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- Remove error message. [Jose Diaz-Gonzalez]

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- Print version on start. [Jose Diaz-Gonzalez]

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Fix
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- Set a reasonable default for redis. [Jose Diaz-Gonzalez]

Other
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- Ignore .env files. [Jose Diaz-Gonzalez]

- Add more logging when there are errors. [Jose Diaz-Gonzalez]