已知数列\(\{a _{n} \}\)满足\(a _{1} =1\)，\(\{a _{n} \}\)的前\(n\)项和\(S _{n}\)满足\(S _{n+1} =2S _{n} +n+1\)．
\((1)\)求数列\(\{a _{n} \}\)的通项公式；
\((2)\)记数列\(\{ \dfrac {1}{a_{n}}\}\)的前\(n\)项和为\(T _{n}\)，证明：\(T_{n} < \dfrac {5}{3}\)．