Port of :wiki:DOCS/mongoperf to docs
minor: clarification to pidfilepath
minor: clarification
build: forcing a build order that won''t confuse rsync
Fix broken links for methods
fix typo re2ad  to read in write operations
merge: typo and linking fixes
DOCS-1030: replica set failover procedure
minor: fixing cross reference
minor: fixing cross reference
merge: DOCS-971
DOCS-971: edits
DOCS-1032: write concern related change
DOCS-971: edits
Minor typo
minor style correction
Merge branch 'master' of git://github.com/mongodb/docs