Update install.rst

Missing mention about "migrations" folder and init command which creates your phinx.yml config file.
docs: rephrase sentence on auto-incrementing column

I didn't understand what that sentence was saying until I actually try to add an `id` column, this should be clearer.
Merge pull request #311 from maxgalbu/patch-1

docs: rephrase sentence on auto-incrementing column
improve copy
Merge pull request #295 from hasannawaz/patch-1

Update install.rst
check if last column is the one that has to be changed.
Merge pull request #318 from fabu-gharbieh/Bugfix-sqllite-changecolumn-error-when-last-column-is-changed

check if last column is the one that has to be changed.
Merge branch '0.3.x-dev' of github.com:robmorgan/phinx into 0.3.x-dev
php 5.3 bc fix
Revert "Automatic mysql ID to be unsigned as default"
Merge pull request #320 from robmorgan/revert-293-unsigned-id

Revert "Automatic mysql ID to be unsigned as default"
use phinx php build instead
Optimize table existence check

On large databases, running SHOW TABLES will return a large array.
Avoid grabbing and looping over that every time by checking the table
by name directly. See here for reference:

http://dev.mysql.com/doc/refman/5.5/en/information-schema-optimization.html
Merge pull request #323 from Symplicity/optimized_hasTable

Optimize table existence check
use constants instead
updating to 0.3.8
Update migrations.rst

missing quote marks around update on addForeignKey example
Merge pull request #326 from x20mar/patch-1

Update migrations.rst
Merge branch 'master' of https://github.com/robmorgan/phinx into patch-2
return of geospatial support + tests on pgsql