docstring grammar.
Merge pull request #5910 from andrewkittredge/master

docstring grammar.
Merge pull request #5903 from jorisvandenbossche/docs-code-snippets

DOC: remove usage of code-block directive in docstrings + fix some warnings
BLD: match version tags when using git-describe to gen version string
Merge pull request #5916 from y-p/PR_setup_git_describe_match_tags

BLD: match version tags when using git-describe to gen version string
BUG: Bug in idxmin/max with object dtypes (GH5914)
Merge pull request #5918 from jreback/index_float

BUG: Bug in idxmin/max with object dtypes (GH5914)
BUG/TST: dt+BDay(n) wrong if n>5, n%5==0 and dt not on offset (GH5890)
DOC: updated release.rst (GH5890)
BLD: remove local autosummary copy
DOC: remove scikits.timeseries dep from faq.rst and docs in general
DOC: update copyright string years
BLD: conf.py fixes
Merge pull request #5911 from dorandeluz/bday-addition

BUG: dt+BDay(n) wrong if n>5, n%5==0 and dt not on offset (GH5890)
Merge pull request #5921 from y-p/PR_doc_fixes

Pr doc fixes
Revert "BLD: remove local autosummary copy" GH5921

This reverts commit 19583a10bd56c2027decd87cf1dc8a9f111eb1eb.
BUG: bug in chained assignment with ix and another chained series (GH5928)
Merge pull request #5930 from jreback/indexer

BUG: bug in chained assignment with ix and another chained series (GH5928)
BUG: Bug in creating an empty DataFrame, copying, then assigning (GH5932)
Merge pull request #5935 from jreback/empty_frame_copy

BUG: Bug in creating an empty DataFrame, copying, then assigning (GH5932)