Explicit PHP requirement
improve error messages when the download fails
feature #59 improve error messages when the download fails (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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improve error messages when the download fails

This pull request addresses #48.

Commits
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cadccd3 improve error messages when the download fails
minor #60 Explicit PHP requirement (garak)

This PR was merged into the 1.0-dev branch.

Discussion
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Explicit PHP requirement

Commits
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557b629 Explicit PHP requirement
always show an error message with PHP < 5.4
Added more information about project installed
suggest to use symfony.phar on Windows
feature #64 Added more information about project installed (saro0h)

This PR was merged into the 1.0-dev branch.

Discussion
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Added more information about project installed

Before enhancement:
![capture d ecran 2014-11-30 a 21 05 49](https://cloud.githubusercontent.com/assets/667519/5239116/bf08c954-78d4-11e4-9d46-01767681be37.png)

After enhancement:
![capture d ecran 2014-12-03 a 22 16 26](https://cloud.githubusercontent.com/assets/667519/5288968/1b20e6a6-7b3a-11e4-99da-98fdca151ba7.png)

Commits
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83c8b2d Added more information about project installed
fixed typo
minor #67 suggest to use symfony.phar on Windows (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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suggest to use symfony.phar on Windows

The command that is suggested since #59 when the download of a non-existent Symfony version fails, is not sufficient on Windows. We need to suggest `php symfony.phar ...` instead.

Commits
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6a7324d suggest to use symfony.phar on Windows
minor #66 always show an error message with PHP < 5.4 (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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always show an error message with PHP < 5.4

Commits
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279cf17 always show an error message with PHP < 5.4
prepared the 0.3.0 release
bumped version to 0.4.0-DEV
also clean up on installation errors
add return type to docblock
minor #70 add return type to docblock (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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add return type to docblock

Commits
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6b33e01 add return type to docblock
bug #69 also clean up on installation errors (xabbuh)

This PR was merged into the 1.0-dev branch.

Discussion
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also clean up on installation errors

This resolves #68.

Commits
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c4bec07 also clean up on installation errors
updated deps
prepared the 0.4.0 release
bumped version to 0.5.0-DEV