where to add software i2c master library

Hi all,

I have downloaded software i2c library from https://github.com/todbot/SoftI2CMaster and extracted in documents/arduino/libraries folder.

Worked with small example, it worked. Now i want to include SoftI2cMaster.h in my user defined library.

i kept my user defined library pca9548.h and pca9548.cpp in documents/arduino/libraries folder only.

but when i tried to include SoftI2cMaster.h in my user defined library pca9548.cpp it is not working??

It shows "No such file or directory as SoftI2cMaster.

I am not getting exactly where to add these software i2c master library in such a manner that i can use in my all user defined libraries

Thanks Alagappan